diff --git a/lib/api/entities.rb b/lib/api/entities.rb
index c8531e80af152d2264f2e14c7f34c3fa5fefe4e1..f15ca35e9546fe4992da2fd45d1c983c994e5129 100644
--- a/lib/api/entities.rb
+++ b/lib/api/entities.rb
@@ -107,7 +107,8 @@ module API
     end
 
     class MergeRequest < Grape::Entity
-      expose :id, :target_branch, :source_branch, :project_id, :title, :state
+      expose :id, :target_branch, :source_branch, :title, :state
+      expose :target_project_id, as: :project_id
       expose :author, :assignee, using: Entities::UserBasic
     end