Index: uspace/drv/vhc/hc.h
===================================================================
--- uspace/drv/vhc/hc.h	(revision bd8c753d552e6b0ff878d0bbc41a00ff515f345c)
+++ uspace/drv/vhc/hc.h	(revision 92574f413b9e9e99c9c0d1cf1c3a3b1bdf6ccbcb)
@@ -47,5 +47,5 @@
  */
 typedef void (*hc_transaction_done_callback_t)(void *buffer, size_t size,
-    usb_transaction_outcome_t outcome, void *arg);
+    int outcome, void *arg);
 
 /** Pending transaction details. */