Index: uspace/app/virtusbkbd/virtusbkbd.c
===================================================================
--- uspace/app/virtusbkbd/virtusbkbd.c	(revision 99ea659c80024f93852d40937d05a2165e807d46)
+++ uspace/app/virtusbkbd/virtusbkbd.c	(revision ad79d8088692a194ad89ca818cbb53f029b5c464)
@@ -202,5 +202,5 @@
 int main(int argc, char * argv[])
 {
-	printf("Dump of report descriptor (%u bytes):\n", report_descriptor_size);
+	printf("Dump of report descriptor (%zu bytes):\n", report_descriptor_size);
 	size_t i;
 	for (i = 0; i < report_descriptor_size; i++) {
Index: uspace/drv/vhc/connhost.c
===================================================================
--- uspace/drv/vhc/connhost.c	(revision 99ea659c80024f93852d40937d05a2165e807d46)
+++ uspace/drv/vhc/connhost.c	(revision ad79d8088692a194ad89ca818cbb53f029b5c464)
@@ -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),
Index: uspace/lib/usb/src/remotedrv.c
===================================================================
--- uspace/lib/usb/src/remotedrv.c	(revision 99ea659c80024f93852d40937d05a2165e807d46)
+++ uspace/lib/usb/src/remotedrv.c	(revision ad79d8088692a194ad89ca818cbb53f029b5c464)
@@ -300,5 +300,5 @@
  */
 static void remote_in_callback(usb_hc_device_t *hc,
-    usb_transaction_outcome_t outcome, size_t actual_size, void *arg)
+    size_t actual_size, usb_transaction_outcome_t outcome, void *arg)
 {
 	transfer_info_t *transfer = (transfer_info_t *) arg;