diff --git a/modules/ssl/ssl_util_stapling.c b/modules/ssl/ssl_util_stapling.c
index 2dc8fce..e0ad5d8 100644
--- a/modules/ssl/ssl_util_stapling.c
+++ b/modules/ssl/ssl_util_stapling.c
@@ -72,7 +72,7 @@ void ssl_stapling_ex_init(void)
     if (stapling_ex_idx != -1)
         return;
     stapling_ex_idx = X509_get_ex_new_index(0, "X509 cached OCSP info", 0, 0,
-                                            certinfo_free);
+                                            0);
 }
 
 static X509 *stapling_get_issuer(modssl_ctx_t *mctx, X509 *x)