lib/json_schema/schema.rb in json_schema-0.19.1 vs lib/json_schema/schema.rb in json_schema-0.20.1

@@ -262,10 +262,10 @@
       !clones.include?(self)
     end
 
     def pointer
       if parent
-        parent.pointer + "/" + fragment
+        (parent.pointer + "/".freeze + fragment).freeze
       else
         fragment
       end
     end