1 files changed, 1 insertions, 1 deletions
diff --git a/lib/api/milestones.rb b/lib/api/milestones.rb
index abd263c1dfc..e7ab82f08db 100644
--- a/lib/api/milestones.rb
+++ b/lib/api/milestones.rb
@@ -23,7 +23,7 @@ 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 list of project milestones' do
         success Entities::Milestone
       end