diff --git a/base/shell/explorer/traywnd.cpp b/base/shell/explorer/traywnd.cpp
index e0b5aba452a..9ca7b25781c 100644
--- a/base/shell/explorer/traywnd.cpp
+++ b/base/shell/explorer/traywnd.cpp
@@ -2168,6 +2168,10 @@ ChangePos:
             bHandled = FALSE;
             return 0;
         }
+        else if (g_TaskbarSettings.bLock)
+        {
+            return 0;
+        }
 
         return DrawSizerWithTheme((HRGN) wParam);
     }