diff --git a/Flow.Launcher/ViewModel/MainViewModel.cs b/Flow.Launcher/ViewModel/MainViewModel.cs
index 0531c925d..748b86fb7 100644
--- a/Flow.Launcher/ViewModel/MainViewModel.cs
+++ b/Flow.Launcher/ViewModel/MainViewModel.cs
@@ -664,7 +664,7 @@ namespace Flow.Launcher.ViewModel
 
         private void RemoveOldQueryResults(Query query)
         {
-            if (_lastQuery.ActionKeyword != query.ActionKeyword)
+            if (_lastQuery?.ActionKeyword != query?.ActionKeyword)
             {
                 Results.Clear();
             }