diff --git a/code/espurna/libs/SyncClientWrap.h b/code/espurna/libs/SyncClientWrap.h
index c22d27f9..b252eaf5 100644
--- a/code/espurna/libs/SyncClientWrap.h
+++ b/code/espurna/libs/SyncClientWrap.h
@@ -9,13 +9,29 @@ Temporary wrap to fix https://github.com/me-no-dev/ESPAsyncTCP/issues/109
 
 #include <SyncClient.h>
 
+// ref Core 2.5.0: cores/esp8266/IPAddress.h
+#ifndef CONST
+#include <lwip/init.h>
+
+#if LWIP_VERSION_MAJOR == 1
+#define CONST
+#else
+#define CONST const
+#endif
+
+#endif
+
 class SyncClientWrap: public SyncClient {
 
     public:
+        SyncClientWrap() {}
+        ~SyncClientWrap() {}
+
+        // int connect(const char*, uint16_t);
+        using SyncClient::connect;
 
-        int connect(const char *host, uint16_t port);
-        int connect(CONST IPAddress& ip, uint16_t port) { return connect(ip, port); }
-        bool flush(unsigned int maxWaitMs = 0) { flush(); return true; }
-        bool stop(unsigned int maxWaitMs = 0) { stop(); return true; }
+        int connect(CONST IPAddress& ip, uint16_t port) { IPAddress _ip(ip); return SyncClient::connect(_ip, port); }
+        bool flush(unsigned int maxWaitMs = 0) { SyncClient::flush(); return true; }
+        bool stop(unsigned int maxWaitMs = 0) { SyncClient::stop(); return true; }
 
 };