Index: uspace/app/testwrit/testwrit.c
===================================================================
--- uspace/app/testwrit/testwrit.c	(revision 2ce8d958b6b43ce9f317915c4002d909dfc71800)
+++ uspace/app/testwrit/testwrit.c	(revision 79b5bc9760270df2382f9c25d0704d1de300629e)
@@ -33,4 +33,5 @@
 
 #include <stdio.h>
+#include <unistd.h>
 
 #define BUF_SIZE 1024