diff -r ec8f690f3e0f -r 55b49cc1f33a hedgewars/uScript.pas
--- a/hedgewars/uScript.pas	Tue Jul 24 18:53:42 2012 -0400
+++ b/hedgewars/uScript.pas	Wed Jul 25 10:56:14 2012 -0400
@@ -981,7 +981,7 @@
             begin
             prevgear := CurrentHedgehog^.Gear;
             prevgear^.Active := false;
-            prevgear^.State:= prevgear^.State and not gstHHDriven;
+            prevgear^.State:= prevgear^.State and (not gstHHDriven);
             prevgear^.Z := cHHZ;
             prevgear^.Message:= prevgear^.Message or gmRemoveFromList or gmAddToList;