diff --git a/bin/portzap b/bin/portzap
index 43c4975..079028d 100755
--- a/bin/portzap
+++ b/bin/portzap
@@ -41,7 +41,7 @@ has_portzap_access() {
 }
 
 user_is_not_root() {
-    user_id=$(id -u $(whoami))
+    user_id=$(id -u)
     result=$(test $user_id -ne "0")
     return $result
 }