diff --git a/tools/test-migrations b/tools/test-migrations
index 8ab16febca..18405c6d3c 100755
--- a/tools/test-migrations
+++ b/tools/test-migrations
@@ -3,7 +3,8 @@ set -e
 echo 'Testing whether migrations are consistent with models'
 if ! ./manage.py makemigrations --check --dry-run; then
     echo
-    echo 'ERROR: Migrations are not consistent with models!  Fix with `./manage.py makemigrations`.'
+    echo 'ERROR: Migrations are not consistent with models!  Fix with `./tools/renumber-migrations`.'
+    echo 'See http://zulip.readthedocs.io/en/latest/schema-migrations.html for details.'
     echo
     exit 1
 else