diff --git a/warp-go.sh b/warp-go.sh
index 9d1223b..d07a708 100644
--- a/warp-go.sh
+++ b/warp-go.sh
@@ -599,7 +599,7 @@ stack_switch() {
     esac
   fi
 
-  [[ "${#CONF}" != [34] ]] && error " $(text 10) " || sh -c "$(eval echo "\$SWITCH$TO")"
+  [[ "${#TO}" != [34] ]] && error " $(text 10) " || sh -c "$(eval echo "\$SWITCH$TO")"
   ${SYSTEMCTL_RESTART[int]}
   grep -q "^AllowedIPs.*0\.\0\/0" /opt/warp-go/warp.conf || unset INTERFACE
   OPTION=o && net