diff --git a/dot b/dot
index ed8b427..17ee37d 100755
--- a/dot
+++ b/dot
@@ -19,8 +19,9 @@ include() {
 func() {
     if is_function $(echo "super_$2"); then
         [ "${DO_SUDO:-yes}" = "yes" ] || return 0
-        cmd=". $1 && super_$2"
-        [ "$(id -u)" = "0" ] && sh -c "$cmd" || sudo sh -c "$cmd"
+        ecmd=". $1 && super_$2"
+        [ "$(id -u)" = "0" ] && sh -c "$ecmd" || sudo sh -c "$ecmd"
+        unset ecmd
     fi
     is_function $2 && $2    
 }