diff --git a/DS4Windows/DS4Forms/DS4Form.cs b/DS4Windows/DS4Forms/DS4Form.cs
index dda0fa0..cd6ca62 100644
--- a/DS4Windows/DS4Forms/DS4Form.cs
+++ b/DS4Windows/DS4Forms/DS4Form.cs
@@ -2178,7 +2178,7 @@ Properties.Resources.DS4Update, MessageBoxButtons.YesNo, MessageBoxIcon.Question
                 }
                 else
                 {
-                    ScpDevice.UnregisterNotify(Handle);
+                    ScpDevice.UnregisterNotify(regHandle);
                 }
             }
             else if (userClosing && closeMini && !contextclose)