diff --git a/examples/stm32f1/lisa-m/usb_dfu/usbdfu.c b/examples/stm32f1/lisa-m/usb_dfu/usbdfu.c
index 02d919f6..bb038f23 100644
--- a/examples/stm32f1/lisa-m/usb_dfu/usbdfu.c
+++ b/examples/stm32f1/lisa-m/usb_dfu/usbdfu.c
@@ -246,13 +246,12 @@ int main(void)
 		}
 	}
 
-        rcc_clock_setup_in_hsi_out_48mhz();
+       	rcc_clock_setup_in_hsi_out_48mhz();
 
-	rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPAEN);
-	rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_AFIOEN);
+	rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPCEN);
 
-	AFIO_MAPR |= AFIO_MAPR_SWJ_CFG_JTAG_OFF_SW_ON;
-	gpio_set_mode(GPIOA, GPIO_MODE_INPUT, 0, GPIO15);
+	gpio_set(GPIOC, GPIO2);
+	gpio_set_mode(GPIOC, GPIO_MODE_OUTPUT_50_MHZ, GPIO_CNF_OUTPUT_PUSHPULL, GPIO2);
 
 	usbd_init(&stm32f107_usb_driver, &dev, &config, usb_strings);
 	usbd_set_control_buffer_size(sizeof(usbd_control_buffer));
@@ -261,9 +260,7 @@ int main(void)
 				USB_REQ_TYPE_TYPE | USB_REQ_TYPE_RECIPIENT,
 				usbdfu_control_request);
 
-	gpio_set(GPIOA, GPIO15);
-	gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_2_MHZ, 
-			GPIO_CNF_OUTPUT_PUSHPULL, GPIO15);
+	gpio_clear(GPIOC, GPIO2);
 
 	while (1) 
 		usbd_poll();