diff --git a/.eslintrc.json b/.eslintrc.json
index 5b341e6d..25190758 100644
--- a/.eslintrc.json
+++ b/.eslintrc.json
@@ -26,6 +26,7 @@
       "semi": "off",
       "no-extra-semi": "warn",
       "no-case-declarations": "warn",
-      "no-useless-escape" : "warn"
+      "no-useless-escape" : "warn",
+      "no-prototype-builtins": "warn"
   }
 }
diff --git a/media/CircleGraph/view.js b/media/CircleGraph/view.js
index 3cbd3f5a..a5ab5fc5 100644
--- a/media/CircleGraph/view.js
+++ b/media/CircleGraph/view.js
@@ -581,7 +581,7 @@ view.View = class {
         this._clearSelection();
 
         // set new selection
-        if (selection.hasOwnProperty('names')) {
+        if (Object.prototype.hasOwnProperty.call(selection, 'names')) {
             // selection is by names
             const names = selection.names;
             let scrollToSelects = [];  // elements to make visible by scroll to
@@ -643,7 +643,7 @@ view.View = class {
         //      (3) interate all graph nodes and set if exist in opname, clear if not.
         //      here, (3) is implemented
 
-        if (!message.hasOwnProperty('partition')) {
+        if (!Object.prototype.hasOwnProperty.call(message, 'partition')) {
             return;
         }
         const partition = message.partition;
diff --git a/media/PartEditor/index.js b/media/PartEditor/index.js
index c450a0a1..4c8216a3 100644
--- a/media/PartEditor/index.js
+++ b/media/PartEditor/index.js
@@ -359,7 +359,7 @@ editor.Editor = class {
     this.clearOperatorsCode();
 
     for (let name in this.partition.OPNAME) {
-      if (this.partition.OPNAME.hasOwnProperty(name)) {
+      if (Object.prototype.hasOwnProperty.call(this.partition.OPNAME, name)) {
         let backend = this.partition.OPNAME[name];
         let beCode = this.backendCode(backend);
         if (beCode !== -1) {
@@ -430,7 +430,7 @@ editor.Editor = class {
   backendCode(value) {
     if (typeof value === 'string') {
       value = value.toUpperCase();
-      if (this.beToCode.hasOwnProperty(value)) {
+      if (Object.prototype.hasOwnProperty.call(this.beToCode, value)) {
         return this.beToCode[value];
       }
     }
diff --git a/src/PartEditor/PartEditor.ts b/src/PartEditor/PartEditor.ts
index 300bc1af..494511fa 100644
--- a/src/PartEditor/PartEditor.ts
+++ b/src/PartEditor/PartEditor.ts
@@ -328,10 +328,11 @@ class PartEditor implements PartGraphEvent {
       partContent['partition'] = this.makeDefaultPartiton();
     }
 
-    if (message.hasOwnProperty('opname')) {
+    if (Object.prototype.hasOwnProperty.call(message, 'opname')) {
       partContent.OPNAME = message.opname;
     }
-    if (message.hasOwnProperty('partition')) {
+
+    if (Object.prototype.hasOwnProperty.call(message, 'partition')) {
       partContent.partition = message.partition;
     }