diff --git a/ShareX.HelpersLib/SingleInstanceApplication/ApplicationInstanceManager.cs b/ShareX.HelpersLib/SingleInstanceApplication/ApplicationInstanceManager.cs
index dfe677101..7a2af208e 100644
--- a/ShareX.HelpersLib/SingleInstanceApplication/ApplicationInstanceManager.cs
+++ b/ShareX.HelpersLib/SingleInstanceApplication/ApplicationInstanceManager.cs
@@ -54,8 +54,6 @@ public static bool CreateSingleInstance(string name, EventHandler<InstanceCallba
                     UpdateRemoteObject(name);
 
                     if (eventWaitHandle != null) eventWaitHandle.Set();
-
-                    semaphore.Release();
                 }
 
                 Environment.Exit(0);
@@ -125,6 +123,8 @@ private static void WaitOrTimerCallback(object state, bool timedOut)
             if (callback == null) return;
 
             callback(state, new InstanceCallbackEventArgs(InstanceProxy.IsFirstInstance, InstanceProxy.CommandLineArgs));
+
+            semaphore.Release();
         }
     }
 }
\ No newline at end of file