diff --git a/test/testaudio.c b/test/testaudio.c
index bd15838311..94de784715 100644
--- a/test/testaudio.c
+++ b/test/testaudio.c
@@ -212,6 +212,8 @@ static Thing *UpdateMouseOver(const float x, const float y)
         thing = FindThingAtPoint(x, y);
     }
 
+    mouseover_thing = thing;
+
     if (!thing) {
         SetDefaultTitleBar();
     } else if (thing->titlebar) {