diff --git a/libraries/ESP8266WiFi/src/ESP8266WiFiGeneric.cpp b/libraries/ESP8266WiFi/src/ESP8266WiFiGeneric.cpp
index 03255a68c6..effe473a72 100644
--- a/libraries/ESP8266WiFi/src/ESP8266WiFiGeneric.cpp
+++ b/libraries/ESP8266WiFi/src/ESP8266WiFiGeneric.cpp
@@ -474,7 +474,7 @@ int ESP8266WiFiGenericClass::hostByName(const char* aHostname, IPAddress& aResul
     }
 
     if(err != 0) {
-        DEBUG_WIFI_GENERIC("[hostByName] Host: %s lookup error: %d!\n", aHostname, err);
+        DEBUG_WIFI_GENERIC("[hostByName] Host: %s lookup error: %d!\n", aHostname, (int)err);
     } else {
         DEBUG_WIFI_GENERIC("[hostByName] Host: %s IP: %s\n", aHostname, aResult.toString().c_str());
     }
diff --git a/libraries/ESP8266WiFi/src/ESP8266WiFiSTA.cpp b/libraries/ESP8266WiFi/src/ESP8266WiFiSTA.cpp
index 7d87c8fea4..afb4cac77f 100644
--- a/libraries/ESP8266WiFi/src/ESP8266WiFiSTA.cpp
+++ b/libraries/ESP8266WiFi/src/ESP8266WiFiSTA.cpp
@@ -197,15 +197,6 @@ wl_status_t ESP8266WiFiSTAClass::begin() {
     return status();
 }
 
-static void
-swap(IPAddress &lhs, IPAddress &rhs)
-{
-  IPAddress tmp = lhs;
-  lhs = rhs;
-  rhs = tmp;
-}
-
-
 /**
  * Change IP configuration settings disabling the dhcp client
  * @param local_ip   Static ip configuration