diff --git a/include/proto/ssl_sock.h b/include/proto/ssl_sock.h
index 586ebb9..9e27bfa 100644
--- a/include/proto/ssl_sock.h
+++ b/include/proto/ssl_sock.h
@@ -85,7 +85,7 @@
 int ssl_sock_set_generated_cert(SSL_CTX *ctx, unsigned int key, struct bind_conf *bind_conf);
 unsigned int ssl_sock_generated_cert_key(const void *data, size_t len);
 
-#if (OPENSSL_VERSION_NUMBER >= 0x1010000fL) && !defined(OPENSSL_NO_ASYNC) && !defined(LIBRESSL_VERSION_NUMBER)
+#if (HA_OPENSSL_VERSION_NUMBER >= 0x1010000fL) && !defined(OPENSSL_NO_ASYNC) && !defined(LIBRESSL_VERSION_NUMBER)
 void ssl_async_fd_handler(int fd);
 void ssl_async_fd_free(int fd);
 #endif