diff --git a/app/controllers/projects/board_issues_controller.rb b/app/controllers/projects/board_issues_controller.rb
index 30bd2559cec..cdaaacfbbd4 100644
--- a/app/controllers/projects/board_issues_controller.rb
+++ b/app/controllers/projects/board_issues_controller.rb
@@ -7,7 +7,7 @@ class Projects::BoardIssuesController < Projects::ApplicationController
     issues = Boards::Issues::ListService.new(project, current_user, filter_params).execute
     issues = issues.page(params[:page])
 
-    render json: issues.as_json(only: [:id, :title, :confidential], include: { labels: { only: [:id, :title, :color] } })
+    render json: issues.as_json(only: [:iid, :title, :confidential], include: { labels: { only: [:id, :title, :color] } })
   end
 
   def update
diff --git a/spec/fixtures/api/schemas/issue.json b/spec/fixtures/api/schemas/issue.json
index 666e0cdf82c..0a9bf4e0fb7 100644
--- a/spec/fixtures/api/schemas/issue.json
+++ b/spec/fixtures/api/schemas/issue.json
@@ -1,12 +1,12 @@
 {
   "type": "object",
   "required" : [
-    "id",
+    "iid",
     "title",
     "confidential"
   ],
   "properties" : {
-    "id": { "type": "integer" },
+    "iid": { "type": "integer" },
     "title": { "type": "string" },
     "confidential": { "type": "boolean" },
     "labels": {