diff --git a/scripts/env b/scripts/env
index c81fbf8ddc..726a354b57 100755
--- a/scripts/env
+++ b/scripts/env
@@ -22,7 +22,7 @@ Commands:
 Options:
 
 EOF
-	exit ${1:-1}
+	exit "${1:-1}"
 }
 
 error() {