diff --git a/testsuite/testutils.c b/testsuite/testutils.c
index 5459935952729283fce9f6b488bc41357b31945d..2d935884411d80395ec680bdaeb257d227630517 100644
--- a/testsuite/testutils.c
+++ b/testsuite/testutils.c
@@ -2,7 +2,6 @@
 
 #include "testutils.h"
 
-#include <stdlib.h>
 #include <ctype.h>
 
 
diff --git a/testsuite/testutils.h b/testsuite/testutils.h
index a21715d382b18d6939dd11f5c1b36f74ebfe0270..fd231410de72a45ca0723c9f92b8eaa642c5730b 100644
--- a/testsuite/testutils.h
+++ b/testsuite/testutils.h
@@ -1,7 +1,7 @@
 #ifndef NETTLE_TESTUTILS_H_INCLUDED
 #define NETTLE_TESTUTILS_H_INCLUDED
 
-#include <stdint.h>
+#include <inttypes.h>
 
 /* Decodes a NUL-terminated hex string. */
 int