diff --git a/script_res/ap_calc.js b/script_res/ap_calc.js
index 3173f2d..d162df7 100644
--- a/script_res/ap_calc.js
+++ b/script_res/ap_calc.js
@@ -302,6 +302,7 @@ $(".move-selector").change(function() {
     } else {
         moveGroupObj.children(".move-hits").hide();
     }
+    moveGroupObj.children(".move-z").prop("checked", false);
 });
 
 // auto-update set details on select