diff --git a/code/ui/ui_shared.c b/code/ui/ui_shared.c
index b1718e77..f26d11b8 100644
--- a/code/ui/ui_shared.c
+++ b/code/ui/ui_shared.c
@@ -1121,10 +1121,10 @@ void Menu_TransitionItemByName(menuDef_t *menu, const char *p, rectDef_t rectFro
       item->window.offsetTime = time;
 			memcpy(&item->window.rectClient, &rectFrom, sizeof(rectDef_t));
 			memcpy(&item->window.rectEffects, &rectTo, sizeof(rectDef_t));
-			item->window.rectEffects2.x = abs(rectTo.x - rectFrom.x) / amt;
-			item->window.rectEffects2.y = abs(rectTo.y - rectFrom.y) / amt;
-			item->window.rectEffects2.w = abs(rectTo.w - rectFrom.w) / amt;
-			item->window.rectEffects2.h = abs(rectTo.h - rectFrom.h) / amt;
+			item->window.rectEffects2.x = fabs(rectTo.x - rectFrom.x) / amt;
+			item->window.rectEffects2.y = fabs(rectTo.y - rectFrom.y) / amt;
+			item->window.rectEffects2.w = fabs(rectTo.w - rectFrom.w) / amt;
+			item->window.rectEffects2.h = fabs(rectTo.h - rectFrom.h) / amt;
       Item_UpdatePosition(item);
     }
   }