diff --git a/src/gps/GPS.cpp b/src/gps/GPS.cpp
index 0e0b5f8b6..ff5b2e7b1 100644
--- a/src/gps/GPS.cpp
+++ b/src/gps/GPS.cpp
@@ -16,7 +16,7 @@
 #define GPS_RESET_MODE HIGH
 #endif
 
-#if defined(NRF52840_XXAA) || defined(NRF52833_XXAA) || defined(ARCH_ESP32) || defined(aLinuxInputImpl)
+#if defined(NRF52840_XXAA) || defined(NRF52833_XXAA) || defined(ARCH_ESP32) || defined(ARCH_PORTDUINO)
 HardwareSerial *GPS::_serial_gps = &Serial1;
 #else
 HardwareSerial *GPS::_serial_gps = NULL;
@@ -1286,4 +1286,4 @@ int32_t GPS::disable()
     setAwake(false);
 
     return INT32_MAX;
-}
\ No newline at end of file
+}