diff --git a/recipes-openmoko/openmoko-gsmd/files/default b/recipes-openmoko/openmoko-gsmd/files/default
index e7c536b..766b389 100644
--- a/recipes-openmoko/openmoko-gsmd/files/default
+++ b/recipes-openmoko/openmoko-gsmd/files/default
@@ -37,7 +37,7 @@
                 ;;
 	"sysmocom_sysmobts_v2")
 		GSMD_OPTS="-v wavecom"
-		GSM_DEV="/dev/ttyS0"
+		GSM_DEV="/dev/ttyS2"
 		;;
 	*)
 		# Unknown board