diff --git a/dlls/comctl32/comctl32.h b/dlls/comctl32/comctl32.h
index f9ed8b84ffd..7dfdf089eb1 100644
--- a/dlls/comctl32/comctl32.h
+++ b/dlls/comctl32/comctl32.h
@@ -214,9 +214,9 @@ typedef struct
 
 /* undocumented functions */
 
-LPVOID WINAPI Alloc (DWORD) __WINE_ALLOC_SIZE(1);
-LPVOID WINAPI ReAlloc (LPVOID, DWORD) __WINE_ALLOC_SIZE(2);
 BOOL   WINAPI Free (LPVOID);
+void * WINAPI Alloc (DWORD) __WINE_ALLOC_SIZE(1) __WINE_DEALLOC(Free) __WINE_MALLOC;
+void * WINAPI ReAlloc (void *, DWORD) __WINE_ALLOC_SIZE(2) __WINE_DEALLOC(Free);
 DWORD  WINAPI GetSize (LPVOID);
 
 INT  WINAPI Str_GetPtrA (LPCSTR, LPSTR, INT);