1 files changed, 12 insertions, 1 deletions
diff --git a/app/models/project.rb b/app/models/project.rb
index d827bfaa806..90967a12b96 100644
--- a/app/models/project.rb
+++ b/app/models/project.rb
@@ -1265,7 +1265,18 @@ class Project < ActiveRecord::Base
   end
 
   def remove_private_deploy_keys
-    deploy_keys.where(public: false).delete_all
+    exclude_keys_linked_to_other_projects = <<-SQL
+      NOT EXISTS (
+        SELECT 1
+        FROM deploy_keys_projects dkp2
+        WHERE dkp2.deploy_key_id = deploy_keys_projects.deploy_key_id
+        AND dkp2.project_id != deploy_keys_projects.project_id
+      )
+    SQL
+
+    deploy_keys.where(public: false)
+               .where(exclude_keys_linked_to_other_projects)
+               .delete_all
   end
 
   def remove_pages