Index: uspace/drv/vhc/connhost.c
===================================================================
--- uspace/drv/vhc/connhost.c	(revision eac610e188a3fe299c1cae932e3524e7415b491d)
+++ uspace/drv/vhc/connhost.c	(revision 9f6c5ef09aad0b78133963d155701a50a4570836)
@@ -93,5 +93,5 @@
     usbhc_iface_transfer_out_callback_t callback, void *arg)
 {
-	printf(NAME ": transfer OUT [%d.%d (%s); %u]\n",
+	printf(NAME ": transfer OUT [%d.%d (%s); %zu]\n",
 	    target.address, target.endpoint,
 	    usb_str_transfer_type(transfer_type),
@@ -113,5 +113,5 @@
     usbhc_iface_transfer_out_callback_t callback, void *arg)
 {
-	printf(NAME ": transfer SETUP [%d.%d (%s); %u]\n",
+	printf(NAME ": transfer SETUP [%d.%d (%s); %zu]\n",
 	    target.address, target.endpoint,
 	    usb_str_transfer_type(transfer_type),
@@ -133,5 +133,5 @@
     usbhc_iface_transfer_in_callback_t callback, void *arg)
 {
-	printf(NAME ": transfer IN [%d.%d (%s); %u]\n",
+	printf(NAME ": transfer IN [%d.%d (%s); %zu]\n",
 	    target.address, target.endpoint,
 	    usb_str_transfer_type(transfer_type),