diff --git a/source/src/menus.cpp b/source/src/menus.cpp
index f7e8e882..7e93a69e 100644
--- a/source/src/menus.cpp
+++ b/source/src/menus.cpp
@@ -520,10 +520,13 @@ struct mitemcheckbox : mitem
     virtual void select()
     {
         checked = !checked;
+        if(action && action[0])
+        {
         push("arg1", checked ? "1" : "0");
         execute(action);
         pop("arg1");
     }
+    }
 
     virtual void init()
     {