diff --git a/hardware/zeroplus-logic-cube/gl_usb.c b/hardware/zeroplus-logic-cube/gl_usb.c
index c84e61c4..58d50bad 100644
--- a/hardware/zeroplus-logic-cube/gl_usb.c
+++ b/hardware/zeroplus-logic-cube/gl_usb.c
@@ -66,7 +66,7 @@ int gl_write_address(libusb_device_handle *devh, unsigned int address)
 					 0, packet, 1, TIMEOUT);
 	if (ret != 1)
 		sr_err("%s: libusb_control_transfer returned %d\n",
-		       __FUNCTION__, ret);
+		       __func__, ret);
 	return ret;
 }
 
@@ -79,7 +79,7 @@ int gl_write_data(libusb_device_handle *devh, unsigned int val)
 				      0, packet, 1, TIMEOUT);
 	if (ret != 1)
 		sr_err("%s: libusb_control_transfer returned %d\n",
-		       __FUNCTION__, ret);
+		       __func__, ret);
 	return ret;
 }
 
@@ -92,7 +92,7 @@ int gl_read_data(libusb_device_handle *devh)
 				      0, packet, 1, TIMEOUT);
 	if (ret != 1)
 		sr_err("%s: libusb_control_transfer returned %d, val=%hhx\n",
-		       __FUNCTION__, ret, packet[0]);
+		       __func__, ret, packet[0]);
 	return (ret == 1) ? packet[0] : ret;
 }
 
@@ -107,7 +107,7 @@ int gl_read_bulk(libusb_device_handle *devh, void *buffer, unsigned int size)
 				      0, packet, 8, TIMEOUT);
 	if (ret != 8)
 		sr_err("%s: libusb_control_transfer returned %d\n",
-		       __FUNCTION__, ret);
+		       __func__, ret);
 
 	ret = libusb_bulk_transfer(devh, ENDPOINT_BULK_IN, buffer, size,
 				   &transferred, TIMEOUT);
diff --git a/hardware/zeroplus-logic-cube/zeroplus.c b/hardware/zeroplus-logic-cube/zeroplus.c
index b25ce364..e48bf5e6 100644
--- a/hardware/zeroplus-logic-cube/zeroplus.c
+++ b/hardware/zeroplus-logic-cube/zeroplus.c
@@ -453,7 +453,7 @@ static int *hw_get_capabilities(void)
 /* TODO: This will set the same samplerate for all devices. */
 static int set_configuration_samplerate(uint64_t samplerate)
 {
-	sr_info("%s(%" PRIu64 ")", __FUNCTION__, samplerate);
+	sr_info("%s(%" PRIu64 ")", __func__, samplerate);
 	if (samplerate > SR_MHZ(1))
 		analyzer_set_freq(samplerate / SR_MHZ(1), FREQ_SCALE_MHZ);
 	else if (samplerate > SR_KHZ(1))