diff --git a/src/esp32_platform.h b/src/esp32_platform.h
index dba4b3a..9394577 100644
--- a/src/esp32_platform.h
+++ b/src/esp32_platform.h
@@ -10,7 +10,7 @@ class Esp32Platform : public ArduinoPlatform
     using ArduinoPlatform::_mulitcastPort;
 public:
     Esp32Platform();
-    Esp32Platform( HardwareSerial& s);
+    Esp32Platform( HardwareSerial* s);
 
     // ip stuff
     uint32_t currentIpAddress() override;