diff --git a/code/ui/ui_shared.c b/code/ui/ui_shared.c
index 0cc74f7b..a7bdd31c 100644
--- a/code/ui/ui_shared.c
+++ b/code/ui/ui_shared.c
@@ -1491,7 +1491,7 @@ float Item_Slider_ThumbPosition(itemDef_t *item) {
 		x = item->window.rect.x;
 	}
 
-	if (editDef == NULL && item->cvar) {
+	if (!editDef || !item->cvar) {
 		return x;
 	}