diff --git a/src/hardware/brymen-dmm/api.c b/src/hardware/brymen-dmm/api.c
index 230b6adf..dacbee88 100644
--- a/src/hardware/brymen-dmm/api.c
+++ b/src/hardware/brymen-dmm/api.c
@@ -111,7 +111,12 @@ static GSList *scan(struct sr_dev_driver *di, GSList *options)
 
 	devices = NULL;
 
-	conn = serialcomm = NULL;
+	/*
+	 * BEWARE! Default 'conn' is not desirable when the device cannot
+	 * reliably get detected. Insist that users specify the port.
+	 */
+	conn = NULL;
+	serialcomm = "9600/8n1/dtr=1/rts=1";
 	for (l = options; l; l = l->next) {
 		src = l->data;
 		switch (src->key) {
@@ -126,10 +131,7 @@ static GSList *scan(struct sr_dev_driver *di, GSList *options)
 	if (!conn)
 		return NULL;
 
-	if (serialcomm)
-		devices = brymen_scan(di, conn, serialcomm);
-	else
-		devices = brymen_scan(di, conn, "9600/8n1/dtr=1/rts=1");
+	devices = brymen_scan(di, conn, serialcomm);
 
 	return devices;
 }
diff --git a/src/hardware/brymen-dmm/parser.c b/src/hardware/brymen-dmm/parser.c
index d42ff45a..7fcb3456 100644
--- a/src/hardware/brymen-dmm/parser.c
+++ b/src/hardware/brymen-dmm/parser.c
@@ -284,7 +284,7 @@ SR_PRIV int brymen_parse(const uint8_t *buf, float *floatval,
 		analog->meaning->mqflags |= SR_MQFLAG_DC;
 
 	if (flags.is_low_batt)
-		sr_info("Low battery!");
+		sr_warn("Low battery!");
 
 	return SR_OK;
 }
diff --git a/src/hardware/brymen-dmm/protocol.h b/src/hardware/brymen-dmm/protocol.h
index d5090ee6..ec839d48 100644
--- a/src/hardware/brymen-dmm/protocol.h
+++ b/src/hardware/brymen-dmm/protocol.h
@@ -40,7 +40,6 @@ enum packet_len_status {
 
 struct dev_context {
 	struct sr_sw_limits sw_limits;
-
 	uint8_t buf[DMM_BUFSIZE];
 	int bufoffset;
 	int buflen;
@@ -66,9 +65,9 @@ SR_PRIV int brymen_parse(const uint8_t *buf, float *floatval,
 		struct sr_datafeed_analog *analog, void *info);
 
 SR_PRIV int brymen_stream_detect(struct sr_serial_dev_inst *serial,
-				 uint8_t *buf, size_t *buflen,
-				 packet_length_t get_packet_size,
-				 packet_valid_callback is_valid,
-				 uint64_t timeout_ms, int baudrate);
+		uint8_t *buf, size_t *buflen,
+		packet_length_t get_packet_size,
+		packet_valid_callback is_valid,
+		uint64_t timeout_ms, int baudrate);
 
 #endif