1 files changed, 1 insertions, 1 deletions
diff --git a/lib/api/v3/branches.rb b/lib/api/v3/branches.rb
index 699e41b5537..7d9d6246e46 100644
--- a/lib/api/v3/branches.rb
+++ b/lib/api/v3/branches.rb
@@ -9,7 +9,7 @@ module API
       params do
         requires :id, type: String, desc: 'The ID of a project'
       end
-      resource :projects do
+      resource :projects, requirements: { id: %r{[^/]+} } do
         desc 'Get a project repository branches' do
           success ::API::Entities::RepoBranch
         end