diff --git a/src/config/project/prefs/index.js b/src/config/project/prefs/index.js
index 3c5dfa9..3e827d1 100644
--- a/src/config/project/prefs/index.js
+++ b/src/config/project/prefs/index.js
@@ -1,4 +1,4 @@
-let { join } = require('path')
+let { join, parse: parsePath } = require('path')
 let { existsSync, readFileSync } = require('fs')
 let read = require('../../../read')
 let validate = require('../validate')
@@ -7,11 +7,17 @@ let { parse } = require('./dotenv')
 let { homedir } = require('os')
 
 module.exports = function getPrefs ({ scope, inventory, errors, _testing }) {
-  /* istanbul ignore next */
   let cwd = scope === 'global'
-    ? _testing ? join(inventory._project.cwd, homedir()) : homedir()
+    ? homedir()
     : inventory._project.cwd
 
+  /* istanbul ignore next */
+  if (_testing && scope === 'global') {
+    let _homedir = homedir()
+    if (process.platform === 'win32') _homedir = _homedir.replace(parsePath(cwd).root, '')
+    cwd = join(inventory._project.cwd, _homedir)
+  }
+
   let envFilepath = join(cwd, '.env')
   let hasEnvFile = scope === 'local' && existsSync(envFilepath)
   let prefs = read({ type: 'preferences', cwd, errors })
diff --git a/test/unit/src/config/project/index-test.js b/test/unit/src/config/project/index-test.js
index b37ad66..e4f5f13 100644
--- a/test/unit/src/config/project/index-test.js
+++ b/test/unit/src/config/project/index-test.js
@@ -1,4 +1,4 @@
-let { join } = require('path')
+let { join, parse } = require('path')
 let { homedir } = require('os')
 let test = require('tape')
 let mockTmp = require('mock-tmp')
@@ -11,7 +11,10 @@ let sut = join(cwd, 'src', 'config', 'project')
 let getProjectConfig = require(sut)
 
 let localPrefsFile = 'prefs.arc'
-let globalPrefsFile = join(homedir(), 'prefs.arc')
+let _homedir = homedir()
+if (process.platform === 'win32') _homedir = _homedir.replace(parse(cwd).root, '')
+let globalPrefsFile = join(_homedir, 'prefs.arc')
+let _testing = true
 
 test('Set up env', t => {
   t.plan(1)
@@ -99,7 +102,7 @@ useAWS true`
     [globalPrefsFile]: globalPrefs
   })
   inventory = inventoryDefaults({ cwd })
-  proj = getProjectConfig({ arc, errors, inventory, _testing: true })
+  proj = getProjectConfig({ arc, errors, inventory, _testing })
   t.equal(errors.length, 0, 'Did not error')
   t.ok(proj.preferences, 'Populated preferences')
   t.equal(proj.preferences.env.testing.fiz, 'buz', 'Populated testing env')
@@ -117,7 +120,7 @@ useAWS true`
     [globalPrefsFile]: globalPrefs,
   })
   inventory = inventoryDefaults({ cwd })
-  proj = getProjectConfig({ arc, errors, inventory, _testing: true })
+  proj = getProjectConfig({ arc, errors, inventory, _testing })
   t.equal(errors.length, 0, 'Did not error')
   t.ok(proj.preferences, 'Populated preferences')
   t.equal(proj.preferences.env.testing.foo, 'bar', 'Populated testing env (preferred local to global prefs)')