diff --git a/programs/fuzz/common.c b/programs/fuzz/common.c
index 98aa403..41fa858 100644
--- a/programs/fuzz/common.c
+++ b/programs/fuzz/common.c
@@ -1,3 +1,5 @@
+#define MBEDTLS_DECLARE_PRIVATE_IDENTIFIERS
+
 #include "common.h"
 #include <limits.h>
 #include <stdio.h>