diff --git a/lib/hardware/GwM5Base.h b/lib/hardware/GwM5Base.h
index b5cc77a..a3284ee 100644
--- a/lib/hardware/GwM5Base.h
+++ b/lib/hardware/GwM5Base.h
@@ -35,7 +35,7 @@
 #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_UNI,9600
 #endif
 
 //M5 ProtoHub