diff --git a/cmd/cloud_sql_proxy/build.sh b/cmd/cloud_sql_proxy/build.sh
index e9badd7a3..51aa4f9e2 100755
--- a/cmd/cloud_sql_proxy/build.sh
+++ b/cmd/cloud_sql_proxy/build.sh
@@ -62,7 +62,7 @@ case $1 in
   if [[ "$files" != "" ]]; then
     echo >&2 "Can't build a release version with local edits; files:"
     echo >&2 "$files"
-    #exit 1
+    exit 1
   fi
   if [[ "$2" == "" ]]; then
     echo >&2 "Must provide a version number to use as the second parameter:"