diff --git a/Flow.Launcher/ViewModel/SettingWindowViewModel.cs b/Flow.Launcher/ViewModel/SettingWindowViewModel.cs
index e2c1d9700..c869f5601 100644
--- a/Flow.Launcher/ViewModel/SettingWindowViewModel.cs
+++ b/Flow.Launcher/ViewModel/SettingWindowViewModel.cs
@@ -309,7 +309,11 @@ namespace Flow.Launcher.ViewModel
         public double WindowWidthSize
         {
             get => Settings.WindowSize;
-            set => Settings.WindowSize = value;
+            set
+            {
+                Settings.WindowSize = value;
+                Application.Current.MainWindow.Visibility = Visibility.Visible;
+            }
         }
 
         public bool UseGlyphIcons