diff --git a/Keystroke.API/KeystrokeAPI.cs b/Keystroke.API/KeystrokeAPI.cs
index bf728fc..c6a046c 100644
--- a/Keystroke.API/KeystrokeAPI.cs
+++ b/Keystroke.API/KeystrokeAPI.cs
@@ -78,7 +78,7 @@ private void KeyParser(IntPtr wParam, IntPtr lParam, bool shiftPressed, bool cap
 
 		public void Dispose()
 		{
-			if (globalKeyboardHookId == IntPtr.Zero)
+			if (globalKeyboardHookId != IntPtr.Zero)
 				User32.UnhookWindowsHookEx(globalKeyboardHookId);
 		}
 	}