diff --git a/src/hardware/korad-kaxxxxp/api.c b/src/hardware/korad-kaxxxxp/api.c
index 78c55b47..ea7c7f34 100644
--- a/src/hardware/korad-kaxxxxp/api.c
+++ b/src/hardware/korad-kaxxxxp/api.c
@@ -159,7 +159,6 @@ static GSList *scan(struct sr_dev_driver *di, GSList *options)
 	if (ret < 0)
 		return NULL;
 
-	memset(&reply, 0, sizeof(reply));
 	ret = korad_kaxxxxp_read_chars(serial, len, reply);
 	if (ret < 0)
 		return NULL;
diff --git a/src/hardware/korad-kaxxxxp/protocol.c b/src/hardware/korad-kaxxxxp/protocol.c
index 2d0cb9b5..1407d51a 100644
--- a/src/hardware/korad-kaxxxxp/protocol.c
+++ b/src/hardware/korad-kaxxxxp/protocol.c
@@ -21,7 +21,6 @@
 #include <config.h>
 #include "protocol.h"
 
-#define REQ_TIMEOUT_MS 500
 #define DEVICE_PROCESSING_TIME_MS 80
 
 SR_PRIV int korad_kaxxxxp_send_cmd(struct sr_serial_dev_inst *serial,
@@ -309,8 +308,6 @@ SR_PRIV int korad_kaxxxxp_get_value(struct sr_serial_dev_inst *serial,
 		return ret;
 	}
 
-	reply[count] = 0;
-
 	if (value) {
 		sr_atof_ascii((const char *)&reply, value);
 		sr_dbg("value: %f", *value);