diff --git a/os/hal/include/usb.h b/os/hal/include/usb.h
index 6f18d7c55..b56385403 100644
--- a/os/hal/include/usb.h
+++ b/os/hal/include/usb.h
@@ -249,8 +249,8 @@ typedef enum {
  */
 typedef enum {
   USB_EP0_WAITING_SETUP,                /**< Waiting for SETUP data.        */
-  USB_EP0_TX,                           /**< Trasmitting.                   */
-  USB_EP0_WAITING_TX0,                  /**< Waiting transmit 0             */
+  USB_EP0_TX,                           /**< Transmitting.                  */
+  USB_EP0_WAITING_TX0,                  /**< Waiting transmit 0.            */
   USB_EP0_WAITING_STS,                  /**< Waiting status.                */
   USB_EP0_RX,                           /**< Receiving.                     */
   USB_EP0_SENDING_STS,                  /**< Sending status.                */