M openbox/client.c → openbox/client.c

@@ -2930,10 +2930,11 @@ frame_adjust_area(self->frame, FALSE, TRUE, TRUE);
 
     /* cap any X windows at the size of an unsigned short */
     *w = MIN(*w,
-             G_MAXUSHORT - self->frame->size.left - self->frame->size.right);
+             (gint)G_MAXUSHORT
+             - self->frame->size.left - self->frame->size.right);
     *h = MIN(*h,
-             G_MAXUSHORT - self->frame->size.top - self->frame->size.bottom);
-
+             (gint)G_MAXUSHORT
+             - self->frame->size.top - self->frame->size.bottom);
 
     /* gets the frame's position */
     frame_client_gravity(self->frame, x, y);