diff --git a/app/models/merge_request.rb b/app/models/merge_request.rb
index bfea209bf6d..a4b939f1140 100644
--- a/app/models/merge_request.rb
+++ b/app/models/merge_request.rb
@@ -62,11 +62,11 @@ class MergeRequest < ActiveRecord::Base
       transition closed: :reopened
     end
 
-    event :lock do
+    event :lock_mr do
       transition [:reopened, :opened] => :locked
     end
 
-    event :unlock do
+    event :unlock_mr do
       transition locked: :reopened
     end
 
diff --git a/app/services/merge_requests/auto_merge_service.rb b/app/services/merge_requests/auto_merge_service.rb
index e35c03275f2..20b88d1510c 100644
--- a/app/services/merge_requests/auto_merge_service.rb
+++ b/app/services/merge_requests/auto_merge_service.rb
@@ -6,7 +6,7 @@ module MergeRequests
   # Called when you do merge via GitLab UI
   class AutoMergeService < BaseMergeService
     def execute(merge_request, current_user, commit_message)
-      merge_request.lock
+      merge_request.lock_mr
 
       if Gitlab::Satellite::MergeAction.new(current_user, merge_request).merge!(commit_message)
         merge_request.merge
@@ -17,11 +17,11 @@ module MergeRequests
 
         true
       else
-        merge_request.unlock
+        merge_request.unlock_mr
         false
       end
     rescue
-      merge_request.unlock if merge_request.locked?
+      merge_request.unlock_mr if merge_request.locked?
       merge_request.mark_as_unmergeable
       false
     end