diff --git a/wolfssl/internal.h b/wolfssl/internal.h
index 532a68f29..73581fe90 100644
--- a/wolfssl/internal.h
+++ b/wolfssl/internal.h
@@ -4307,7 +4307,7 @@ struct WOLFSSL {
 #ifdef WOLFSSL_STATIC_EPHEMERAL
     StaticKeyExchangeInfo_t staticKE;
 #endif
-#ifdef OPENSSL_ALL
+#if defined(OPENSSL_ALL) || defined(WOLFSSL_HAPROXY)
     /* Added in libest port: allow applications to get the 'tls-unique' Channel
      * Binding Type (https://tools.ietf.org/html/rfc5929#section-3). This is
      * used in the EST protocol to bind an enrollment to a TLS session through