diff --git a/bin/modified_files b/bin/modified_files
index 0e6a4e08..37bcabeb 100755
--- a/bin/modified_files
+++ b/bin/modified_files
@@ -3,6 +3,6 @@ set -e
 
 test -n "${CI_MERGE_REQUEST_DIFF_BASE_SHA}"
 
-git diff --name-status ${CI_MERGE_REQUEST_DIFF_BASE_SHA}...rails \
+git diff --name-status ${CI_MERGE_REQUEST_DIFF_BASE_SHA}...origin/rails \
   | grep -v "^D" \
   | cut -f 2