Index: uspace/app/vuhid/hids/bootkbd.c
===================================================================
--- uspace/app/vuhid/hids/bootkbd.c	(revision 967447658a7c74fa9716dc3e4d51ef50eb46c052)
+++ uspace/app/vuhid/hids/bootkbd.c	(revision 2a6e2358c6c111bca4fb6572d20c204df89cac65)
@@ -102,5 +102,5 @@
 
 static int on_data_out(vuhid_interface_t *iface,
-    void *buffer, size_t buffer_size)
+    const void *buffer, size_t buffer_size)
 {
 	if (buffer_size == 0) {