Index: uspace/app/tester/thread/thread1.c
===================================================================
--- uspace/app/tester/thread/thread1.c	(revision a000878c0dee83a08f032207ffd800c201fca95b)
+++ uspace/app/tester/thread/thread1.c	(revision 764d71e80b7c72cc3d48b7d5d789623dd67c6961)
@@ -35,4 +35,5 @@
 #include <stdio.h>
 #include <unistd.h>
+#include <inttypes.h>
 #include "../tester.h"
 
@@ -74,5 +75,6 @@
 	atomic_set(&finish, 0);
 	while (atomic_get(&threads_finished) < total) {
-		TPRINTF("Threads left: %u\n", total - atomic_get(&threads_finished));
+		TPRINTF("Threads left: %" PRIua "\n",
+		    total - atomic_get(&threads_finished));
 		sleep(1);
 	}