diff --git a/src/hardware/serial-dmm/api.c b/src/hardware/serial-dmm/api.c
index 98bf7fb2..7a7be0c2 100644
--- a/src/hardware/serial-dmm/api.c
+++ b/src/hardware/serial-dmm/api.c
@@ -61,7 +61,8 @@ static GSList *scan(struct sr_dev_driver *di, GSList *options)
 
 	dmm = (struct dmm_info *)di;
 
-	conn = serialcomm = NULL;
+	conn = NULL;
+	serialcomm = dmm->serialcomm;
 	for (l = options; l; l = l->next) {
 		src = l->data;
 		switch (src->key) {
@@ -76,9 +77,6 @@ static GSList *scan(struct sr_dev_driver *di, GSList *options)
 	if (!conn)
 		return NULL;
 
-	if (!serialcomm)
-		serialcomm = dmm->conn;
-
 	serial = sr_serial_dev_inst_new(conn, serialcomm);
 
 	if (serial_open(serial, SERIAL_RDWR) != SR_OK)
@@ -196,7 +194,7 @@ static int dev_acquisition_start(const struct sr_dev_inst *sdi)
 	return SR_OK;
 }
 
-#define DMM(ID, CHIPSET, VENDOR, MODEL, CONN, PACKETSIZE, TIMEOUT, \
+#define DMM(ID, CHIPSET, VENDOR, MODEL, SERIALCOMM, PACKETSIZE, TIMEOUT, \
 			DELAY, REQUEST, VALID, PARSE, DETAILS) \
 	&((struct dmm_info) { \
 		{ \
@@ -217,7 +215,7 @@ static int dev_acquisition_start(const struct sr_dev_inst *sdi)
 			.dev_acquisition_stop = std_serial_dev_acquisition_stop, \
 			.context = NULL, \
 		}, \
-		VENDOR, MODEL, CONN, PACKETSIZE, TIMEOUT, DELAY, \
+		VENDOR, MODEL, SERIALCOMM, PACKETSIZE, TIMEOUT, DELAY, \
 		REQUEST, 1, NULL, VALID, PARSE, DETAILS, sizeof(struct CHIPSET##_info) \
 	}).di
 
diff --git a/src/hardware/serial-dmm/protocol.h b/src/hardware/serial-dmm/protocol.h
index f96d1357..27533b6e 100644
--- a/src/hardware/serial-dmm/protocol.h
+++ b/src/hardware/serial-dmm/protocol.h
@@ -29,8 +29,8 @@ struct dmm_info {
 	const char *vendor;
 	/** Model. */
 	const char *device;
-	/** serialconn string. */
-	const char *conn;
+	/** serialcomm string. */
+	const char *serialcomm;
 	/** Packet size in bytes. */
 	int packet_size;
 	/**