diff --git a/common/memory.h b/common/memory.h
index fa8a14448..b19f54f94 100644
--- a/common/memory.h
+++ b/common/memory.h
@@ -625,7 +625,7 @@ class ABSL_ATTRIBUTE_TRIVIAL_ABI [[nodiscard]] Unique final {
           }
         }
       } else {
-        google::protobuf::Arena::Destroy(ptr_);
+        delete ptr_;
       }
     }
   }