diff --git a/src/esp_platform.h b/src/esp_platform.h
index e0e57de..372ff32 100644
--- a/src/esp_platform.h
+++ b/src/esp_platform.h
@@ -11,7 +11,7 @@ class EspPlatform : public ArduinoPlatform
 
   public:
     EspPlatform();
-    EspPlatform( HardwareSerial& s);
+    EspPlatform( HardwareSerial* s);
 
     // ip stuff
     uint32_t currentIpAddress() override;