diff --git a/app/services/api/v1/users/delete_user_service.rb b/app/services/api/v1/users/delete_user_service.rb
index f5d93f88d..9f6cb4a7f 100644
--- a/app/services/api/v1/users/delete_user_service.rb
+++ b/app/services/api/v1/users/delete_user_service.rb
@@ -32,7 +32,11 @@ class Api::V1::Users::DeleteUserService < ApplicationService
   end
 
   def del_user_data_by_sql(user_id)
-    sql1 = "delete from memos where author_id=#{user_id}"
-    ActiveRecord::Base.connection.execute(sql1)
+    if ActiveRecord::Base.connection.table_exists?("memos")
+      sql1 = "delete from memos where author_id=#{user_id}"
+      ActiveRecord::Base.connection.execute(sql1)
+    else
+      Rails.logger.info "memos table does not exist"
+    end
   end
 end
\ No newline at end of file