Index: uspace/lib/usbdev/include/usb/dev/pipes.h
===================================================================
--- uspace/lib/usbdev/include/usb/dev/pipes.h	(revision 095bddfcbf5a6087d4cf0bf9f5fdd6d67fea8f8e)
+++ uspace/lib/usbdev/include/usb/dev/pipes.h	(revision 6bba41d4a9756d87e134012bf38e384a7d3bc88d)
@@ -179,5 +179,5 @@
 
 int usb_pipe_read(usb_pipe_t *, void *, size_t, size_t *);
-int usb_pipe_write(usb_pipe_t *, void *, size_t);
+int usb_pipe_write(usb_pipe_t *, const void *, size_t);
 
 int usb_pipe_control_read(usb_pipe_t *, const void *, size_t,