Index: uspace/lib/c/include/sys/time.h
===================================================================
--- uspace/lib/c/include/sys/time.h	(revision 664fc031aeab3e7320e3d3c35adb99a7ab5b1306)
+++ uspace/lib/c/include/sys/time.h	(revision 6c1bb0dc684699135a18f3b165ff9b3ad4f5a3fa)
@@ -79,4 +79,5 @@
 
 extern void udelay(useconds_t);
+extern int usleep(useconds_t);
 
 extern time_t mktime(struct tm *tm);