diff --git a/app/controllers/api/pm/issues_controller.rb b/app/controllers/api/pm/issues_controller.rb
index 19ab28435..3c33ab02d 100644
--- a/app/controllers/api/pm/issues_controller.rb
+++ b/app/controllers/api/pm/issues_controller.rb
@@ -256,7 +256,7 @@ class Api::Pm::IssuesController < Api::Pm::BaseController
     end
     exclude_issues_array = Issue.where(id: full_link_issues_ids).where.not(root_id: nil).pluck(:id, :root_id)
     exclude_issues_array.each do |i| 
-      full_link_issues_ids - [i[0]] if full_link_issues_ids.include?(i[1]) 
+      full_link_issues_ids = full_link_issues_ids - [i[0]] if full_link_issues_ids.include?(i[1]) 
     end
 
     @requirement_issues = Issue.where(id:full_link_issues_ids, pm_issue_type:1).pm_includes