diff --git a/testsuites/libtests/block01/init.c b/testsuites/libtests/block01/init.c
index c4d196bea6..4f9b831ae7 100644
--- a/testsuites/libtests/block01/init.c
+++ b/testsuites/libtests/block01/init.c
@@ -19,6 +19,7 @@
  * http://www.rtems.com/license/LICENSE.
  */
 
+#include <stdio.h>
 #include <assert.h>
 
 #include <rtems.h>