diff --git a/dll/win32/shell32/CCopyToMenu.cpp b/dll/win32/shell32/CCopyToMenu.cpp
index 034acb5d844..e72b217945b 100644
--- a/dll/win32/shell32/CCopyToMenu.cpp
+++ b/dll/win32/shell32/CCopyToMenu.cpp
@@ -101,6 +101,9 @@ BrowseCallbackProc(HWND hwnd, UINT uMsg, LPARAM lParam, LPARAM lpData)
         }
         case BFFM_SELCHANGED:
         {
+            if (!this_)
+                break;
+
             WCHAR szPath[MAX_PATH];
             LPCITEMIDLIST pidl = reinterpret_cast<LPCITEMIDLIST>(lParam);
 
diff --git a/dll/win32/shell32/CMoveToMenu.cpp b/dll/win32/shell32/CMoveToMenu.cpp
index ec8714ebd9b..c0e1c83a54d 100644
--- a/dll/win32/shell32/CMoveToMenu.cpp
+++ b/dll/win32/shell32/CMoveToMenu.cpp
@@ -100,6 +100,9 @@ BrowseCallbackProc(HWND hwnd, UINT uMsg, LPARAM lParam, LPARAM lpData)
         }
         case BFFM_SELCHANGED:
         {
+            if (!this_)
+                break;
+
             WCHAR szPath[MAX_PATH];
             LPCITEMIDLIST pidl = reinterpret_cast<LPCITEMIDLIST>(lParam);