Index: uspace/lib/c/include/sys/time.h
===================================================================
--- uspace/lib/c/include/sys/time.h	(revision 2463df96bddf2aaf81fa87e49bc02ae36dad068d)
+++ uspace/lib/c/include/sys/time.h	(revision 9928240414c72b1dd1c3b2df6d69d5d0fc6d791a)
@@ -79,4 +79,5 @@
 
 extern void udelay(useconds_t);
+extern int usleep(useconds_t);
 
 extern time_t mktime(struct tm *tm);