--- mstools/samples/select/demo.c	2018/08/09 18:20:01	1.1
+++ mstools/samples/select/demo.c	2018/08/09 18:20:52	1.1.1.2
@@ -192,7 +192,7 @@ LONG APIENTRY DemoWndProc(
 
 		case IDM_ABOUT:
 		    lpProcAbout = MakeProcInstance((FARPROC)About, hInst);
-		    DialogBox(hInst, "AboutBox", hWnd, (WNDPROC)lpProcAbout);
+		    DialogBox(hInst, "AboutBox", hWnd, (DLGPROC)lpProcAbout);
 		    FreeProcInstance(lpProcAbout);
 		    break;