1 files changed, 2 insertions, 1 deletions

diff --git a/src/regress/lib/libcrypto/test/test.h b/src/regress/lib/libcrypto/test/test.h
index 60e141d506..1c8391d4ec 100644
--- a/src/regress/lib/libcrypto/test/test.h
+++ b/src/regress/lib/libcrypto/test/test.h
@@ -1,4 +1,4 @@
-/*      $OpenBSD: test.h,v 1.3 2025/05/31 08:25:04 tb Exp $ */
+/*      $OpenBSD: test.h,v 1.4 2025/05/31 11:37:18 tb Exp $ */
 /*
  * Copyright (c) 2025 Joshua Sing <joshua@joshuasing.dev>
  *
@@ -18,6 +18,7 @@
 #ifndef HEADER_TEST_H
 #define HEADER_TEST_H
 
+#include <stddef.h>
 #include <stdint.h>
 
 struct test;