diff --git a/core/usbd_core.c b/core/usbd_core.c
index 0abdba09..612e7951 100644
--- a/core/usbd_core.c
+++ b/core/usbd_core.c
@@ -602,7 +602,7 @@ static int usbd_standard_request_handler(struct usb_setup_packet *setup, uint8_t
  */
 static int usbd_class_request_handler(struct usb_setup_packet *setup, uint8_t **data, uint32_t *len)
 {
-    usb_slist_t *i, *j;
+    usb_slist_t *i;
     if ((setup->bmRequestType & USB_REQUEST_RECIPIENT_MASK) == USB_REQUEST_RECIPIENT_INTERFACE) {
         usb_slist_for_each(i, &usbd_intf_head)
         {
diff --git a/port/dwc2/usb_dc_dwc2.c b/port/dwc2/usb_dc_dwc2.c
index 7a024b08..3a685cf7 100644
--- a/port/dwc2/usb_dc_dwc2.c
+++ b/port/dwc2/usb_dc_dwc2.c
@@ -764,7 +764,6 @@ int usbd_ep_open(const struct usbd_endpoint_cfg *ep_cfg)
 int usbd_ep_close(const uint8_t ep)
 {
     uint8_t ep_idx = USB_EP_GET_IDX(ep);
-    uint16_t ep_mps;
 
     if (USB_EP_DIR_IS_OUT(ep)) {
         if ((USB_OTG_OUTEP(ep_idx)->DOEPCTL & USB_OTG_DOEPCTL_EPENA) == USB_OTG_DOEPCTL_EPENA) {
@@ -975,7 +974,7 @@ int usbd_ep_start_read(const uint8_t ep, uint8_t *data, uint32_t data_len)
 
 void USBD_IRQHandler(void)
 {
-    uint32_t gint_status, temp, ep_idx, ep_intr, epint, read_count, write_count, data_len;
+    uint32_t gint_status, temp, ep_idx, ep_intr, epint;
     gint_status = dwc2_get_glb_intstatus();
 
     if ((USB_OTG_GLB->GINTSTS & 0x1U) == USB_OTG_MODE_DEVICE) {