diff --git a/libraries/WiFi/src/WiFi.h b/libraries/WiFi/src/WiFi.h
index 5a0cd7968..77a64f783 100644
--- a/libraries/WiFi/src/WiFi.h
+++ b/libraries/WiFi/src/WiFi.h
@@ -187,13 +187,6 @@ class WiFiClass : public MbedSocketClass {
 
   unsigned long getTime();
 
-  void lowPowerMode();
-  void noLowPowerMode();
-
-  int ping(const char* hostname, uint8_t ttl = 128);
-  int ping(const String& hostname, uint8_t ttl = 128);
-  int ping(IPAddress host, uint8_t ttl = 128);
-
   friend class WiFiClient;
   friend class WiFiServer;
   friend class WiFiUDP;