diff --git a/win32ss/user/ntuser/display.c b/win32ss/user/ntuser/display.c
index 25b1f947014..19264d613b0 100644
--- a/win32ss/user/ntuser/display.c
+++ b/win32ss/user/ntuser/display.c
@@ -786,7 +786,7 @@ UserChangeDisplaySettings(
     /* Shall we apply the settings? */
     if (!(flags & CDS_NORESET))
     {
-        ULONG ulResult;
+        ULONG_PTR ulResult;
         PVOID pvOldCursor;
         TEXTMETRICW tmw;