diff --git a/u2_bt.c b/u2_bt.c
index 8aaf100..befebb9 100644
--- a/u2_bt.c
+++ b/u2_bt.c
@@ -791,7 +791,7 @@ int main(int argc, char* argv[])
 				}
 			}
 			// line containing values for influxdb
-			char line[21 * 4];
+			char line[22 * 4];
 			int line_len;
 			if (packet_len == sizeof(packet)) { // message is complete
 				if (0xf1 == packet[0] && 0x01 == packet[1]) { // device information packet
diff --git a/u2_usb.c b/u2_usb.c
index fd14a5d..e368051 100644
--- a/u2_usb.c
+++ b/u2_usb.c
@@ -189,7 +189,7 @@ int main(int argc, char* argv[])
 	bool run = true; // read from USB as long as true
 	struct u2_measurement_t meas; // to store the parsed measurement values
 	// line containing values for influxdb
-	char line[21 * 2];
+	char line[22 * 2];
 	int line_len;
 	while (run) {
 		rc = hid_read_timeout(handle, meas.payload, ARRAY_SIZE(meas.payload), 50); // wait for max 50 ms for a measurement