diff --git a/dlls/comctl32/propsheet.c b/dlls/comctl32/propsheet.c
index a75dbcb7105..f5c1c3f057f 100644
--- a/dlls/comctl32/propsheet.c
+++ b/dlls/comctl32/propsheet.c
@@ -615,7 +615,7 @@ static int PROPSHEET_CreatePage(HWND hwndParent,
 					pTemplate,
 					hwndParent,
 					ppshpage->pfnDlgProc,
-					ppshpage);
+					(LPARAM)ppshpage);
 
   ppInfo[index].hwndPage = hwndPage;