Index: uspace/lib/usbdev/src/pipes.c
===================================================================
--- uspace/lib/usbdev/src/pipes.c	(revision b3c396907c3dfb9b7afd227215a7bd6a7416d6dd)
+++ uspace/lib/usbdev/src/pipes.c	(revision e7e1fd38e5e2b8703e15c6b4f74c5357ba1c2038)
@@ -69,11 +69,11 @@
  * @param[out] data_buffer Buffer for incoming data.
  * @param[in] data_buffer_size Size of the buffer for incoming data (in bytes).
- * @param[out] data_transfered_size Number of bytes that were actually
- *                                  transfered during the DATA stage.
+ * @param[out] data_transferred_size Number of bytes that were actually
+ *                                  transferred during the DATA stage.
  * @return Error code.
  */
 int usb_pipe_control_read(usb_pipe_t *pipe,
     const void *setup_buffer, size_t setup_buffer_size,
-    void *buffer, size_t buffer_size, size_t *transfered_size)
+    void *buffer, size_t buffer_size, size_t *transferred_size)
 {
 	assert(pipe);
@@ -105,6 +105,6 @@
 	}
 
-	if (rc == EOK && transfered_size != NULL) {
-		*transfered_size = act_size;
+	if (rc == EOK && transferred_size != NULL) {
+		*transferred_size = act_size;
 	}
 
@@ -166,9 +166,9 @@
  * @param[out] buffer Buffer where to store the data.
  * @param[in] size Size of the buffer (in bytes).
- * @param[out] size_transfered Number of bytes that were actually transfered.
+ * @param[out] size_transferred Number of bytes that were actually transferred.
  * @return Error code.
  */
 int usb_pipe_read(usb_pipe_t *pipe,
-    void *buffer, size_t size, size_t *size_transfered)
+    void *buffer, size_t size, size_t *size_transferred)
 {
 	assert(pipe);
@@ -200,6 +200,6 @@
 	async_exchange_end(exch);
 
-	if (rc == EOK && size_transfered != NULL) {
-		*size_transfered = act_size;
+	if (rc == EOK && size_transferred != NULL) {
+		*size_transferred = act_size;
 	}
 
Index: uspace/lib/usbdev/src/request.c
===================================================================
--- uspace/lib/usbdev/src/request.c	(revision b3c396907c3dfb9b7afd227215a7bd6a7416d6dd)
+++ uspace/lib/usbdev/src/request.c	(revision e7e1fd38e5e2b8703e15c6b4f74c5357ba1c2038)
@@ -118,5 +118,5 @@
  * @param data_size        Size of the @p data buffer
  *                         (in native endianness).
- * @param actual_data_size Actual size of transfered data
+ * @param actual_data_size Actual size of transferred data
  *                         (in native endianness).
  *
@@ -183,12 +183,12 @@
 
 	uint16_t status_usb_endianess;
-	size_t data_transfered_size;
+	size_t data_transferred_size;
 	int rc = usb_control_request_get(pipe, USB_REQUEST_TYPE_STANDARD,
 	    recipient, USB_DEVREQ_GET_STATUS, 0, uint16_host2usb(index),
-	    &status_usb_endianess, 2, &data_transfered_size);
-	if (rc != EOK) {
-		return rc;
-	}
-	if (data_transfered_size != 2) {
+	    &status_usb_endianess, 2, &data_transferred_size);
+	if (rc != EOK) {
+		return rc;
+	}
+	if (data_transferred_size != 2) {
 		return ELIMIT;
 	}
@@ -314,12 +314,12 @@
 	 */
 	uint8_t tmp_buffer;
-	size_t bytes_transfered;
+	size_t bytes_transferred;
 	rc = usb_request_get_descriptor(pipe, request_type, recipient,
 	    descriptor_type, descriptor_index, language,
-	    &tmp_buffer, sizeof(tmp_buffer), &bytes_transfered);
-	if (rc != EOK) {
-		return rc;
-	}
-	if (bytes_transfered != 1) {
+	    &tmp_buffer, sizeof(tmp_buffer), &bytes_transferred);
+	if (rc != EOK) {
+		return rc;
+	}
+	if (bytes_transferred != 1) {
 		return ELIMIT;
 	}
@@ -340,10 +340,10 @@
 	rc = usb_request_get_descriptor(pipe, request_type, recipient,
 	    descriptor_type, descriptor_index, language,
-	    buffer, size, &bytes_transfered);
+	    buffer, size, &bytes_transferred);
 	if (rc != EOK) {
 		free(buffer);
 		return rc;
 	}
-	if (bytes_transfered != size) {
+	if (bytes_transferred != size) {
 		free(buffer);
 		return ELIMIT;