diff --git a/dll/win32/shell32/folders/CRegFolder.cpp b/dll/win32/shell32/folders/CRegFolder.cpp
index d06230a83d5..5965039c147 100644
--- a/dll/win32/shell32/folders/CRegFolder.cpp
+++ b/dll/win32/shell32/folders/CRegFolder.cpp
@@ -116,6 +116,7 @@ HRESULT CGuidItemContextMenu_CreateInstance(PCIDLIST_ABSOLUTE pidlFolder,
         {
             wcscpy(&key[6], pwszCLSID);
             AddClassKeyToArray(key, hKeys, &cKeys);
+            CoTaskMemFree(pwszCLSID);
         }
     }
     AddClassKeyToArray(L"Folder", hKeys, &cKeys);