diff --git a/drivers/isimodem/sms.c b/drivers/isimodem/sms.c
index 5b628e8f..d230a68f 100644
--- a/drivers/isimodem/sms.c
+++ b/drivers/isimodem/sms.c
@@ -469,7 +469,7 @@ static gboolean submit_tpdu(GIsiClient *client, unsigned char *pdu, int pdu_len,
 	uint8_t hdr[] = {
 		SMS_MESSAGE_SEND_REQ,
 		mms,		/* More messages to send */
-		SMS_ROUTE_DEFAULT,
+		SMS_ROUTE_ANY,	/* Use any (default) route */
 		0,		/* Repeated message */
 		0, 0,		/* Filler */
 		2,		/* Subblock count */
diff --git a/drivers/isimodem/sms.h b/drivers/isimodem/sms.h
index e84949c7..67bcb87e 100644
--- a/drivers/isimodem/sms.h
+++ b/drivers/isimodem/sms.h
@@ -163,6 +163,7 @@ enum sms_routing_command {
 };
 
 enum sms_route_preference {
+	SMS_ROUTE_ANY =			0x00,
 	SMS_ROUTE_GPRS_PREF =		0x00,
 	SMS_ROUTE_CS =			0x01,
 	SMS_ROUTE_GPRS =		0x02,