diff --git a/lib/inc/drogon/HttpTypes.h b/lib/inc/drogon/HttpTypes.h
index b3be0b1f..f926912b 100644
--- a/lib/inc/drogon/HttpTypes.h
+++ b/lib/inc/drogon/HttpTypes.h
@@ -126,7 +126,7 @@ class SpinLock
     }
     ~SpinLock()
     {
-        _flag.clear();
+        _flag.clear(std::memory_order_release);
     }
 
   private: