diff --git a/dlls/user32/menu.c b/dlls/user32/menu.c
index 6e7e6632d4b..1444f845563 100644
--- a/dlls/user32/menu.c
+++ b/dlls/user32/menu.c
@@ -4728,7 +4728,7 @@ BOOL WINAPI SetMenuItemInfoA(HMENU hmenu, UINT item, BOOL bypos,
 
     TRACE("hmenu %p, item %u, by pos %d, info %p\n", hmenu, item, bypos, lpmii);
 
-    if (!MENU_NormalizeMenuItemInfoStruct( (MENUITEMINFOW *)lpmii, &mii )) return FALSE;
+    if (!MENU_NormalizeMenuItemInfoStruct( (const MENUITEMINFOW *)lpmii, &mii )) return FALSE;
 
     return SetMenuItemInfo_common(MENU_FindItem(&hmenu, &item, bypos? MF_BYPOSITION : 0),
                                   &mii, FALSE);
@@ -4851,7 +4851,7 @@ BOOL WINAPI InsertMenuItemA(HMENU hMenu, UINT uItem, BOOL bypos,
 
     TRACE("hmenu %p, item %04x, by pos %d, info %p\n", hMenu, uItem, bypos, lpmii);
 
-    if (!MENU_NormalizeMenuItemInfoStruct( (MENUITEMINFOW *)lpmii, &mii )) return FALSE;
+    if (!MENU_NormalizeMenuItemInfoStruct( (const MENUITEMINFOW *)lpmii, &mii )) return FALSE;
 
     item = MENU_InsertItem(hMenu, uItem, bypos ? MF_BYPOSITION : 0 );
     return SetMenuItemInfo_common(item, &mii, FALSE);