diff --git a/cores/arduino/HardwareSerial.cpp b/cores/arduino/HardwareSerial.cpp
index cde5cab7e0..8903278007 100644
--- a/cores/arduino/HardwareSerial.cpp
+++ b/cores/arduino/HardwareSerial.cpp
@@ -114,7 +114,7 @@
     void serialEventLP2() __attribute__((weak));
   #endif
   #if defined(HAVE_HWSERIALLP3)
-    HardwareSerial SerialLP2(LPUART3);
+    HardwareSerial SerialLP3(LPUART3);
     void serialEventLP3() __attribute__((weak));
   #endif
 #endif // HAVE_HWSERIALx