diff --git a/app/models/project_topic_ralate.rb b/app/models/project_topic_ralate.rb
index d8638699f..5c4c760a1 100644
--- a/app/models/project_topic_ralate.rb
+++ b/app/models/project_topic_ralate.rb
@@ -19,4 +19,8 @@ class ProjectTopicRalate < ApplicationRecord
   belongs_to :project_topic, counter_cache: :projects_count
   belongs_to :project  
 
+
+  validates :project_id, uniqueness: { scope: :project_topic_id }
+
+
 end