diff --git a/lib/hardware/GwM5Base.h b/lib/hardware/GwM5Base.h
index f6371a9..2e88f51 100644
--- a/lib/hardware/GwM5Base.h
+++ b/lib/hardware/GwM5Base.h
@@ -35,12 +35,12 @@
 #ifdef M5_GPS_KIT
   GWRESOURCE_USE(BASE,M5_GPS_KIT)
   GWRESOURCE_USE(SERIAL1,M5_GPS_KIT)
-  #define _GWI_SERIAL1 BOARD_LEFT1,-1,GWSERIAL_TYPE_UNI,9600
+  #define _GWI_SERIAL1 BOARD_LEFT1,-1,GWSERIAL_TYPE_RX,9600
 #endif
 #ifdef M5_GPSV2_KIT
   GWRESOURCE_USE(BASE,M5_GPSV2_KIT)
   GWRESOURCE_USE(SERIAL1,M5_GPSV2_KIT)
-  #define _GWI_SERIAL1 BOARD_LEFT1,-1,GWSERIAL_TYPE_UNI,115200
+  #define _GWI_SERIAL1 BOARD_LEFT1,-1,GWSERIAL_TYPE_RX,115200
 #endif
 
 //M5 ProtoHub