diff --git a/BmwDeepObd/JobReader.cs b/BmwDeepObd/JobReader.cs
index 042b21e1a..4898b8e99 100644
--- a/BmwDeepObd/JobReader.cs
+++ b/BmwDeepObd/JobReader.cs
@@ -353,6 +353,7 @@ public int Compare(DisplayInfo x, DisplayInfo y)
         private bool _manualEdit;
         private bool _logTagsPresent;
         private bool _compatIdsUsed;
+        private bool _compatIdWarningShown;
         private string _sgbdFunctional = string.Empty;
         private string _interfaceName = string.Empty;
         private string _vehicleSeries = string.Empty;
@@ -384,6 +385,12 @@ public int Compare(DisplayInfo x, DisplayInfo y)
 
         public bool CompatIdsUsed => _compatIdsUsed;
 
+        public bool CompatIdWarningShown
+        {
+            get => _compatIdWarningShown;
+            set => _compatIdWarningShown = value;
+        }
+
         public string SgbdFunctional => _sgbdFunctional;
 
         public string ManufacturerName => _manufacturerName;
@@ -455,6 +462,7 @@ private void Clear()
             _logPath = string.Empty;
             _logTagsPresent = false;
             _compatIdsUsed = false;
+            _compatIdWarningShown = false;
             _sgbdFunctional = string.Empty;
             _manufacturerName = string.Empty;
             _interfaceName = string.Empty;
diff --git a/BmwDeepObd/MainActivity.cs b/BmwDeepObd/MainActivity.cs
index da20e4c19..cdefd673c 100644
--- a/BmwDeepObd/MainActivity.cs
+++ b/BmwDeepObd/MainActivity.cs
@@ -2175,7 +2175,11 @@ protected void ConnectAction(object sender, ConnectActionArgs connectActionArgs,
 
                     if (ActivityCommon.JobReader.CompatIdsUsed)
                     {
-                        ShowBallonMessage(GetString(Resource.String.compile_compat_id_warn), ActivityCommon.BalloonDismissDuration, BalloonAlligment.Top);
+                        if (!ActivityCommon.JobReader.CompatIdWarningShown)
+                        {
+                            ShowBallonMessage(GetString(Resource.String.compile_compat_id_warn), ActivityCommon.BalloonDismissDuration, BalloonAlligment.Top);
+                            ActivityCommon.JobReader.CompatIdWarningShown = true;
+                        }
                     }
 
                     if (!_instanceData.AdapterCheckOk && _activityCommon.AdapterCheckRequired)