diff --git a/README.md b/README.md
index c4cffb3..d45f238 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # usertiming-compression.js
 
-v0.1.8
+v0.1.9
 
 [http://nicj.net](http://nicj.net)
 
@@ -262,6 +262,7 @@ Or via ``gulp``:
 * v0.1.6 - 2018-11-21: Changed build process to produce UMD (for Node/require) and "Vanilla" (for Browser) files in `dist/`
 * v0.1.7 - 2018-11-21: Ensure `dist/` is published in bower
 * v0.1.8 - 2018-11-21: Also include `*.vanilla.js` in NPM
+* v0.1.9 - 2019-09-17: Fix: Compression on Trie nodes that are prefixes of another
 
 ## Thanks
 
diff --git a/bower.json b/bower.json
index 844c6d4..5e5e1a7 100644
--- a/bower.json
+++ b/bower.json
@@ -1,6 +1,6 @@
 {
   "name": "usertiming-compression",
-  "version": "0.1.8",
+  "version": "0.1.9",
   "homepage": "https://github.com/nicjansma/usertiming-compression.js",
   "authors": [
     "Nic Jansma <nic@nicj.net>"
diff --git a/dist/usertiming-compression.min.js b/dist/usertiming-compression.min.js
index 6bca765..0d24a2a 100644
--- a/dist/usertiming-compression.min.js
+++ b/dist/usertiming-compression.min.js
@@ -1 +1 @@
-!function(r){"use strict";var e,n;void 0!==r?(e=r,n=e.UserTimingCompression):e={};var t,i=t={};i.noConflict=function(){return e.UserTimingCompression=n,i},i.trimTiming=function(r,e){"number"!=typeof r&&(r=0),"number"!=typeof e&&(e=0);var n=Math.round(r),t=Math.round(e);return 0===n?0:n-t},i.toBase36=function(r){return"number"==typeof r?r.toString(36):""},i.findUserTimingForFrame=function(r){var e;if(!r)return[];try{r.location&&r.location.href;if(!("performance"in r&&r.performance&&r.performance.getEntriesByType))return e;e=r.performance.getEntriesByType("mark"),e=e.concat(r.performance.getEntriesByType("measure"))}catch(r){return e}return e},i.compressUserTiming=function(r,e){var n,i,o,a=0,u={};if(e=e||{},!r||!r.length)return[];for(n=0;n<r.length;n++)i=r[n],void 0===u[i.name]&&(u[i.name]=[]),"mark"===i.entryType?u[i.name].push({startTime:i.startTime}):"measure"===i.entryType&&u[i.name].push({startTime:i.startTime,duration:i.duration});for(var f in u)if(u.hasOwnProperty(f)){if(e.map&&void 0===e.map[f])continue;var s=u[f];for(e.map&&void 0!==e.map[f]&&(delete u[f],f=e.map[f]),a=0,n=0;n<s.length;n++){var m=s[n];o=t.toBase36(t.trimTiming(m.startTime,a)),"0"===o&&(o="");var c=o;if("number"==typeof m.duration){var p=t.toBase36(Math.round(m.duration));c+="_","0"!==p&&(c+=p)}a=m.startTime,s[n]=c}u[f]=t.compressArray(s)}return u},i.convertToTrie=function(r){var e,n,t,i,o,a,u,f={};if(!r)return{};for(e in r)if(r.hasOwnProperty(e))for(t=r[e],i=e.split(""),a=f,n=0;n<i.length;n++)o=i[n],u=a[o],void 0===u?a=a[o]=n===i.length-1?t:{}:"string"==typeof u?a=a[o]={"!":u}:n===i.length-1?a[o]["!"]=t:a=a[o];return f},i.optimizeTrie=function(r,e){var n,t,i,o=0;if(!r)return{};for(n in r)"object"==typeof r[n]&&(t=this.optimizeTrie(r[n],!1))&&(delete r[n],n+=t.name,r[n]=t.value),o++;return 1===o?e?(i={},i[n]=r[n],i):{name:n,value:r[n]}:!!e&&r},i.compressArray=function(r){var e=0,n="";if(!r||0===r.length||r.constructor!==Array)return"";for(var t=0;t<r.length;t++){var i=r[t];t<r.length-1&&i===r[t+1]?e++:e>0?(n+=(""!==n?".":"")+i+"*",e>=2&&(n+=e+1),e=0):n+=(""!==n?".":"")+i}return/^\d+$/.test(n)?parseInt(n,10):n},i.getCompressedUserTiming=function(e){var n,i;return e=e||{},n=e.window||r,i=this.findUserTimingForFrame(n),e.from&&(i=i.filter(function(r){return r.startTime+r.duration>=e.from})),e.to&&(i=i.filter(function(r){return r.startTime<=e.to})),t.compressUserTiming(i,e)},i.compressForUri=function(r){if("object"!=typeof r)return"";var e=!1;for(var n in r)if(r.hasOwnProperty(n)){if(isNaN(n)){e=!1;break}e=!0}if(e)return"1"+t.flattenMap(r);var i=t.convertToTrie(r),o=t.optimizeTrie(i,!0),a=t.jsUrl(o),u=t.flattenArray(r);if("string"!=typeof u||0===u.length)return"";var f=encodeURIComponent(a),s=encodeURIComponent(u);return f.length<s.length?a:"0"+u},i.flattenArray=function(r){var e=[];if("object"!=typeof r)return"";for(var n in r)if(r.hasOwnProperty(n)){var t=(r[n]+"").replace("~","%7E");n=n.replace("~","%7E"),e.push(n+"~"+t)}return e=e.join("~")},i.flattenMap=function(r){var e=[];if("object"!=typeof r)return"";for(var n in r)if(r.hasOwnProperty(n)){var i=parseInt(n,10),o=t.toBase36(i);if(i>1331)continue;o.length>1&&(o=t.toBase36(i-36),o="-"+(1===o.length?"0":"")+o),e.push(o+r[n])}return e.sort(),e=e.join("~")},i.jsUrl=function(r){function e(r){return/[^\w-.]/.test(r)?r=r.replace(/[^\w-.]/g,function(r){return"$"===r?"!":(r=r.charCodeAt(0),r<256?"*"+("00"+r.toString(16)).slice(-2):"**"+("0000"+r.toString(16)).slice(-4))}):r}switch(typeof r){case"number":return isFinite(r)?"~"+r:"~null";case"string":return"~'"+e(r);case"boolean":return"~"+r;case"object":return r?Array.isArray(r)?"~("+(r.map(function(r){return t.jsUrl(r)||"~null"}).join("")||"~")+")":"~("+Object.keys(r).map(function(n){var i=t.jsUrl(r[n]);return i&&e(n)+i}).filter(function(r){return r}).sort().join("~")+")":"~null";default:return}},"function"==typeof define&&define.amd?define([],function(){return i}):"undefined"!=typeof module&&module.exports?module.exports=i:void 0!==e&&(e.UserTimingCompression=i)}("undefined"!=typeof window?window:void 0);
\ No newline at end of file
+!function(r){"use strict";var e,n;void 0!==r?(e=r,n=e.UserTimingCompression):e={};var t,i=t={};i.noConflict=function(){return e.UserTimingCompression=n,i},i.trimTiming=function(r,e){"number"!=typeof r&&(r=0),"number"!=typeof e&&(e=0);var n=Math.round(r),t=Math.round(e);return 0===n?0:n-t},i.toBase36=function(r){return"number"==typeof r?r.toString(36):""},i.findUserTimingForFrame=function(r){var e;if(!r)return[];try{r.location&&r.location.href;if(!("performance"in r&&r.performance&&r.performance.getEntriesByType))return e;e=r.performance.getEntriesByType("mark"),e=e.concat(r.performance.getEntriesByType("measure"))}catch(r){return e}return e},i.compressUserTiming=function(r,e){var n,i,o,a=0,u={};if(e=e||{},!r||!r.length)return[];for(n=0;n<r.length;n++)i=r[n],void 0===u[i.name]&&(u[i.name]=[]),"mark"===i.entryType?u[i.name].push({startTime:i.startTime}):"measure"===i.entryType&&u[i.name].push({startTime:i.startTime,duration:i.duration});for(var f in u)if(u.hasOwnProperty(f)){if(e.map&&void 0===e.map[f])continue;var s=u[f];for(e.map&&void 0!==e.map[f]&&(delete u[f],f=e.map[f]),a=0,n=0;n<s.length;n++){var m=s[n];o=t.toBase36(t.trimTiming(m.startTime,a)),"0"===o&&(o="");var c=o;if("number"==typeof m.duration){var p=t.toBase36(Math.round(m.duration));c+="_","0"!==p&&(c+=p)}a=m.startTime,s[n]=c}u[f]=t.compressArray(s)}return u},i.convertToTrie=function(r){var e,n,t,i,o,a,u,f={};if(!r)return{};for(e in r)if(r.hasOwnProperty(e))for(t=r[e],i=e.split(""),a=f,n=0;n<i.length;n++)o=i[n],u=a[o],void 0===u?a=a[o]=n===i.length-1?t:{}:"string"==typeof u||"number"==typeof u?a=a[o]={"!":u}:n===i.length-1?a[o]["!"]=t:a=a[o];return f},i.optimizeTrie=function(r,e){var n,t,i,o=0;if(!r)return{};for(n in r)"object"==typeof r[n]&&(t=this.optimizeTrie(r[n],!1))&&(delete r[n],n+=t.name,r[n]=t.value),o++;return 1===o?e?(i={},i[n]=r[n],i):{name:n,value:r[n]}:!!e&&r},i.compressArray=function(r){var e=0,n="";if(!r||0===r.length||r.constructor!==Array)return"";for(var t=0;t<r.length;t++){var i=r[t];t<r.length-1&&i===r[t+1]?e++:e>0?(n+=(""!==n?".":"")+i+"*",e>=2&&(n+=e+1),e=0):n+=(""!==n?".":"")+i}return/^\d+$/.test(n)?parseInt(n,10):n},i.getCompressedUserTiming=function(e){var n,i;return e=e||{},n=e.window||r,i=this.findUserTimingForFrame(n),e.from&&(i=i.filter(function(r){return r.startTime+r.duration>=e.from})),e.to&&(i=i.filter(function(r){return r.startTime<=e.to})),t.compressUserTiming(i,e)},i.compressForUri=function(r){if("object"!=typeof r)return"";var e=!1;for(var n in r)if(r.hasOwnProperty(n)){if(isNaN(n)){e=!1;break}e=!0}if(e)return"1"+t.flattenMap(r);var i=t.convertToTrie(r),o=t.optimizeTrie(i,!0),a=t.jsUrl(o),u=t.flattenArray(r);if("string"!=typeof u||0===u.length)return"";var f=encodeURIComponent(a),s=encodeURIComponent(u);return f.length<s.length?a:"0"+u},i.flattenArray=function(r){var e=[];if("object"!=typeof r)return"";for(var n in r)if(r.hasOwnProperty(n)){var t=(r[n]+"").replace("~","%7E");n=n.replace("~","%7E"),e.push(n+"~"+t)}return e=e.join("~")},i.flattenMap=function(r){var e=[];if("object"!=typeof r)return"";for(var n in r)if(r.hasOwnProperty(n)){var i=parseInt(n,10),o=t.toBase36(i);if(i>1331)continue;o.length>1&&(o=t.toBase36(i-36),o="-"+(1===o.length?"0":"")+o),e.push(o+r[n])}return e.sort(),e=e.join("~")},i.jsUrl=function(r){function e(r){return/[^\w-.]/.test(r)?r=r.replace(/[^\w-.]/g,function(r){return"$"===r?"!":(r=r.charCodeAt(0),r<256?"*"+("00"+r.toString(16)).slice(-2):"**"+("0000"+r.toString(16)).slice(-4))}):r}switch(typeof r){case"number":return isFinite(r)?"~"+r:"~null";case"string":return"~'"+e(r);case"boolean":return"~"+r;case"object":return r?Array.isArray(r)?"~("+(r.map(function(r){return t.jsUrl(r)||"~null"}).join("")||"~")+")":"~("+Object.keys(r).map(function(n){var i=t.jsUrl(r[n]);return i&&e(n)+i}).filter(function(r){return r}).sort().join("~")+")":"~null";default:return}},"function"==typeof define&&define.amd?define([],function(){return i}):"undefined"!=typeof module&&module.exports?module.exports=i:void 0!==e&&(e.UserTimingCompression=i)}("undefined"!=typeof window?window:void 0);
\ No newline at end of file
diff --git a/dist/usertiming-compression.vanilla.min.js b/dist/usertiming-compression.vanilla.min.js
index 92353b9..35fcdcd 100644
--- a/dist/usertiming-compression.vanilla.min.js
+++ b/dist/usertiming-compression.vanilla.min.js
@@ -1 +1 @@
-!function(r){"use strict";var e,n;void 0!==r?(e=r,n=e.UserTimingCompression):e={};var t,i=t={};i.noConflict=function(){return e.UserTimingCompression=n,i},i.trimTiming=function(r,e){"number"!=typeof r&&(r=0),"number"!=typeof e&&(e=0);var n=Math.round(r),t=Math.round(e);return 0===n?0:n-t},i.toBase36=function(r){return"number"==typeof r?r.toString(36):""},i.findUserTimingForFrame=function(r){var e;if(!r)return[];try{r.location&&r.location.href;if(!("performance"in r&&r.performance&&r.performance.getEntriesByType))return e;e=r.performance.getEntriesByType("mark"),e=e.concat(r.performance.getEntriesByType("measure"))}catch(r){return e}return e},i.compressUserTiming=function(r,e){var n,i,o,a=0,u={};if(e=e||{},!r||!r.length)return[];for(n=0;n<r.length;n++)i=r[n],void 0===u[i.name]&&(u[i.name]=[]),"mark"===i.entryType?u[i.name].push({startTime:i.startTime}):"measure"===i.entryType&&u[i.name].push({startTime:i.startTime,duration:i.duration});for(var f in u)if(u.hasOwnProperty(f)){if(e.map&&void 0===e.map[f])continue;var s=u[f];for(e.map&&void 0!==e.map[f]&&(delete u[f],f=e.map[f]),a=0,n=0;n<s.length;n++){var m=s[n];o=t.toBase36(t.trimTiming(m.startTime,a)),"0"===o&&(o="");var c=o;if("number"==typeof m.duration){var p=t.toBase36(Math.round(m.duration));c+="_","0"!==p&&(c+=p)}a=m.startTime,s[n]=c}u[f]=t.compressArray(s)}return u},i.convertToTrie=function(r){var e,n,t,i,o,a,u,f={};if(!r)return{};for(e in r)if(r.hasOwnProperty(e))for(t=r[e],i=e.split(""),a=f,n=0;n<i.length;n++)o=i[n],u=a[o],void 0===u?a=a[o]=n===i.length-1?t:{}:"string"==typeof u?a=a[o]={"!":u}:n===i.length-1?a[o]["!"]=t:a=a[o];return f},i.optimizeTrie=function(r,e){var n,t,i,o=0;if(!r)return{};for(n in r)"object"==typeof r[n]&&(t=this.optimizeTrie(r[n],!1))&&(delete r[n],n+=t.name,r[n]=t.value),o++;return 1===o?e?(i={},i[n]=r[n],i):{name:n,value:r[n]}:!!e&&r},i.compressArray=function(r){var e=0,n="";if(!r||0===r.length||r.constructor!==Array)return"";for(var t=0;t<r.length;t++){var i=r[t];t<r.length-1&&i===r[t+1]?e++:e>0?(n+=(""!==n?".":"")+i+"*",e>=2&&(n+=e+1),e=0):n+=(""!==n?".":"")+i}return/^\d+$/.test(n)?parseInt(n,10):n},i.getCompressedUserTiming=function(e){var n,i;return e=e||{},n=e.window||r,i=this.findUserTimingForFrame(n),e.from&&(i=i.filter(function(r){return r.startTime+r.duration>=e.from})),e.to&&(i=i.filter(function(r){return r.startTime<=e.to})),t.compressUserTiming(i,e)},i.compressForUri=function(r){if("object"!=typeof r)return"";var e=!1;for(var n in r)if(r.hasOwnProperty(n)){if(isNaN(n)){e=!1;break}e=!0}if(e)return"1"+t.flattenMap(r);var i=t.convertToTrie(r),o=t.optimizeTrie(i,!0),a=t.jsUrl(o),u=t.flattenArray(r);if("string"!=typeof u||0===u.length)return"";var f=encodeURIComponent(a),s=encodeURIComponent(u);return f.length<s.length?a:"0"+u},i.flattenArray=function(r){var e=[];if("object"!=typeof r)return"";for(var n in r)if(r.hasOwnProperty(n)){var t=(r[n]+"").replace("~","%7E");n=n.replace("~","%7E"),e.push(n+"~"+t)}return e=e.join("~")},i.flattenMap=function(r){var e=[];if("object"!=typeof r)return"";for(var n in r)if(r.hasOwnProperty(n)){var i=parseInt(n,10),o=t.toBase36(i);if(i>1331)continue;o.length>1&&(o=t.toBase36(i-36),o="-"+(1===o.length?"0":"")+o),e.push(o+r[n])}return e.sort(),e=e.join("~")},i.jsUrl=function(r){function e(r){return/[^\w-.]/.test(r)?r=r.replace(/[^\w-.]/g,function(r){return"$"===r?"!":(r=r.charCodeAt(0),r<256?"*"+("00"+r.toString(16)).slice(-2):"**"+("0000"+r.toString(16)).slice(-4))}):r}switch(typeof r){case"number":return isFinite(r)?"~"+r:"~null";case"string":return"~'"+e(r);case"boolean":return"~"+r;case"object":return r?Array.isArray(r)?"~("+(r.map(function(r){return t.jsUrl(r)||"~null"}).join("")||"~")+")":"~("+Object.keys(r).map(function(n){var i=t.jsUrl(r[n]);return i&&e(n)+i}).filter(function(r){return r}).sort().join("~")+")":"~null";default:return}},void 0!==e&&(e.UserTimingCompression=i)}("undefined"!=typeof window?window:void 0);
\ No newline at end of file
+!function(r){"use strict";var e,n;void 0!==r?(e=r,n=e.UserTimingCompression):e={};var t,i=t={};i.noConflict=function(){return e.UserTimingCompression=n,i},i.trimTiming=function(r,e){"number"!=typeof r&&(r=0),"number"!=typeof e&&(e=0);var n=Math.round(r),t=Math.round(e);return 0===n?0:n-t},i.toBase36=function(r){return"number"==typeof r?r.toString(36):""},i.findUserTimingForFrame=function(r){var e;if(!r)return[];try{r.location&&r.location.href;if(!("performance"in r&&r.performance&&r.performance.getEntriesByType))return e;e=r.performance.getEntriesByType("mark"),e=e.concat(r.performance.getEntriesByType("measure"))}catch(r){return e}return e},i.compressUserTiming=function(r,e){var n,i,o,a=0,u={};if(e=e||{},!r||!r.length)return[];for(n=0;n<r.length;n++)i=r[n],void 0===u[i.name]&&(u[i.name]=[]),"mark"===i.entryType?u[i.name].push({startTime:i.startTime}):"measure"===i.entryType&&u[i.name].push({startTime:i.startTime,duration:i.duration});for(var f in u)if(u.hasOwnProperty(f)){if(e.map&&void 0===e.map[f])continue;var s=u[f];for(e.map&&void 0!==e.map[f]&&(delete u[f],f=e.map[f]),a=0,n=0;n<s.length;n++){var m=s[n];o=t.toBase36(t.trimTiming(m.startTime,a)),"0"===o&&(o="");var c=o;if("number"==typeof m.duration){var p=t.toBase36(Math.round(m.duration));c+="_","0"!==p&&(c+=p)}a=m.startTime,s[n]=c}u[f]=t.compressArray(s)}return u},i.convertToTrie=function(r){var e,n,t,i,o,a,u,f={};if(!r)return{};for(e in r)if(r.hasOwnProperty(e))for(t=r[e],i=e.split(""),a=f,n=0;n<i.length;n++)o=i[n],u=a[o],void 0===u?a=a[o]=n===i.length-1?t:{}:"string"==typeof u||"number"==typeof u?a=a[o]={"!":u}:n===i.length-1?a[o]["!"]=t:a=a[o];return f},i.optimizeTrie=function(r,e){var n,t,i,o=0;if(!r)return{};for(n in r)"object"==typeof r[n]&&(t=this.optimizeTrie(r[n],!1))&&(delete r[n],n+=t.name,r[n]=t.value),o++;return 1===o?e?(i={},i[n]=r[n],i):{name:n,value:r[n]}:!!e&&r},i.compressArray=function(r){var e=0,n="";if(!r||0===r.length||r.constructor!==Array)return"";for(var t=0;t<r.length;t++){var i=r[t];t<r.length-1&&i===r[t+1]?e++:e>0?(n+=(""!==n?".":"")+i+"*",e>=2&&(n+=e+1),e=0):n+=(""!==n?".":"")+i}return/^\d+$/.test(n)?parseInt(n,10):n},i.getCompressedUserTiming=function(e){var n,i;return e=e||{},n=e.window||r,i=this.findUserTimingForFrame(n),e.from&&(i=i.filter(function(r){return r.startTime+r.duration>=e.from})),e.to&&(i=i.filter(function(r){return r.startTime<=e.to})),t.compressUserTiming(i,e)},i.compressForUri=function(r){if("object"!=typeof r)return"";var e=!1;for(var n in r)if(r.hasOwnProperty(n)){if(isNaN(n)){e=!1;break}e=!0}if(e)return"1"+t.flattenMap(r);var i=t.convertToTrie(r),o=t.optimizeTrie(i,!0),a=t.jsUrl(o),u=t.flattenArray(r);if("string"!=typeof u||0===u.length)return"";var f=encodeURIComponent(a),s=encodeURIComponent(u);return f.length<s.length?a:"0"+u},i.flattenArray=function(r){var e=[];if("object"!=typeof r)return"";for(var n in r)if(r.hasOwnProperty(n)){var t=(r[n]+"").replace("~","%7E");n=n.replace("~","%7E"),e.push(n+"~"+t)}return e=e.join("~")},i.flattenMap=function(r){var e=[];if("object"!=typeof r)return"";for(var n in r)if(r.hasOwnProperty(n)){var i=parseInt(n,10),o=t.toBase36(i);if(i>1331)continue;o.length>1&&(o=t.toBase36(i-36),o="-"+(1===o.length?"0":"")+o),e.push(o+r[n])}return e.sort(),e=e.join("~")},i.jsUrl=function(r){function e(r){return/[^\w-.]/.test(r)?r=r.replace(/[^\w-.]/g,function(r){return"$"===r?"!":(r=r.charCodeAt(0),r<256?"*"+("00"+r.toString(16)).slice(-2):"**"+("0000"+r.toString(16)).slice(-4))}):r}switch(typeof r){case"number":return isFinite(r)?"~"+r:"~null";case"string":return"~'"+e(r);case"boolean":return"~"+r;case"object":return r?Array.isArray(r)?"~("+(r.map(function(r){return t.jsUrl(r)||"~null"}).join("")||"~")+")":"~("+Object.keys(r).map(function(n){var i=t.jsUrl(r[n]);return i&&e(n)+i}).filter(function(r){return r}).sort().join("~")+")":"~null";default:return}},void 0!==e&&(e.UserTimingCompression=i)}("undefined"!=typeof window?window:void 0);
\ No newline at end of file
diff --git a/package.json b/package.json
index 13f21a1..69c3ec3 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
   "name": "usertiming-compression",
   "description": "UserTiming compression and decompression",
   "author": "Nic Jansma",
-  "version": "0.1.8",
+  "version": "0.1.9",
   "repository": {
     "type": "git",
     "url": "http://github.com/nicjansma/usertiming-compression.js.git"