diff --git a/app/src/main/java/info/nightscout/androidaps/MainApp.java b/app/src/main/java/info/nightscout/androidaps/MainApp.java
index 5599e26a68..8b85b5ecab 100644
--- a/app/src/main/java/info/nightscout/androidaps/MainApp.java
+++ b/app/src/main/java/info/nightscout/androidaps/MainApp.java
@@ -47,6 +47,8 @@ import info.nightscout.androidaps.plugins.OpenAPSAMA.OpenAPSAMAPlugin;
 import info.nightscout.androidaps.plugins.OpenAPSMA.OpenAPSMAPlugin;
 import info.nightscout.androidaps.plugins.OpenAPSSMB.OpenAPSSMBPlugin;
 import info.nightscout.androidaps.plugins.Overview.OverviewPlugin;
+import info.nightscout.androidaps.plugins.Overview.events.EventNewNotification;
+import info.nightscout.androidaps.plugins.Overview.notifications.Notification;
 import info.nightscout.androidaps.plugins.Persistentnotification.PersistentNotificationPlugin;
 import info.nightscout.androidaps.plugins.ProfileLocal.LocalProfilePlugin;
 import info.nightscout.androidaps.plugins.ProfileNS.NSProfilePlugin;
@@ -201,6 +203,11 @@ public class MainApp extends Application {
 
         engineeringMode = new File(System.getProperty("EXT_FILES_DIR"),"engineering_mode").canRead();
         devBranch = BuildConfig.VERSION.contains("dev");
+
+        if (devBranch && !engineeringMode) {
+            Notification n = new Notification(Notification.TOAST_ALARM, gs(R.string.closed_loop_disabled_on_dev_branch), Notification.NORMAL);
+            bus().post(new EventNewNotification(n));
+        }
     }
 
     private void registerLocalBroadcastReceiver() {
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 3e923bf821..e9bb24c95f 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -969,5 +969,6 @@
     <string name="fabric_upload">Fabric Upload</string>
     <string name="allow_automated_crash_reporting">Allow automated crash reporting and feature usage data to be sent to the developers via the fabric.io service.</string>
     <string name="g5appnotdetected">Please update your G5 app to supported version</string>
+    <string name="closed_loop_disabled_on_dev_branch">Running dev version. Closed loop is disabled</string>
 </resources>