Index: uspace/app/tester/stdio/stdio1.c
===================================================================
--- uspace/app/tester/stdio/stdio1.c	(revision a000878c0dee83a08f032207ffd800c201fca95b)
+++ uspace/app/tester/stdio/stdio1.c	(revision 8d6c1f139a0fd8ef52d018e1c68b0dcca5ec1ec9)
@@ -60,5 +60,5 @@
 	
 	buf[cnt] = '\0';
-	TPRINTF("Read %u bytes, string \"%s\"\n", cnt, buf);
+	TPRINTF("Read %zu bytes, string \"%s\"\n", cnt, buf);
 	
 	TPRINTF("Seek to beginning...");