diff --git a/src/ArduinoJson/Serialization/JsonSerializerImpl.hpp b/src/ArduinoJson/Serialization/JsonSerializerImpl.hpp
index 889d9be55..f544488af 100644
--- a/src/ArduinoJson/Serialization/JsonSerializerImpl.hpp
+++ b/src/ArduinoJson/Serialization/JsonSerializerImpl.hpp
@@ -90,9 +90,7 @@ inline void ArduinoJson::Internals::JsonSerializer<Writer>::serialize(
       return;
 
     case JSON_NEGATIVE_INTEGER:
-      writer.writeRaw('-');
-      writer.writeInteger(variant._content.asInteger);
-      return;
+      writer.writeRaw('-');  // Falls through.
 
     case JSON_POSITIVE_INTEGER:
       writer.writeInteger(variant._content.asInteger);