diff --git a/desktop/app.js b/desktop/app.js
index 48dbdb15..c13c722b 100644
--- a/desktop/app.js
+++ b/desktop/app.js
@@ -18,7 +18,9 @@ if (!gotTheLock) {
 }
 
 let openFile = process.argv.filter(arg => /\.kdbx$/i.test(arg))[0];
-const userDataDir = app.getPath('userData').replace(/[\\/]temp[\\/]\d+\.\d+[\\/]?$/, '');
+const userDataDir =
+    process.env.PORTABLE_EXECUTABLE_DIR ||
+    app.getPath('userData').replace(/[\\/]temp[\\/]\d+\.\d+[\\/]?$/, '');
 const windowPositionFileName = path.join(userDataDir, 'window-position.json');
 const appSettingsFileName = path.join(userDataDir, 'app-settings.json');
 const tempUserDataPath = path.join(userDataDir, 'temp');
diff --git a/release-notes.md b/release-notes.md
index 81890c12..e85b61b9 100644
--- a/release-notes.md
+++ b/release-notes.md
@@ -2,6 +2,7 @@ Release notes
 -------------
 ##### v1.13.0 (TBD)
 `+` #1341: auto-lock the app on screen lock on Windows  
+`+` #1065: PORTABLE_EXECUTABLE_DIR environment variable  
 `-` fix #1323: version in the About dialog  
 `-` fix #734: OTP secrets with spaces