diff --git a/WiFi/WiFiServer.cpp b/WiFi/WiFiServer.cpp
old mode 100755
new mode 100644
index 8461583aa..e03f9c393
--- a/WiFi/WiFiServer.cpp
+++ b/WiFi/WiFiServer.cpp
@@ -46,12 +46,12 @@ WiFiClient WiFiServer::available(byte* status)
     return WiFiClient(255);
 }
 
-void WiFiServer::write(uint8_t b)
+size_t WiFiServer::write(uint8_t b)
 {
     write(&b, 1);
 }
 
-void WiFiServer::write(const uint8_t *buffer, size_t size)
+size_t WiFiServer::write(const uint8_t *buffer, size_t size)
 {
     for (int sock = 0; sock < MAX_SOCK_NUM; sock++)
     {
diff --git a/WiFi/WiFiServer.h b/WiFi/WiFiServer.h
old mode 100755
new mode 100644
index 2871d06da..849f84cac
--- a/WiFi/WiFiServer.h
+++ b/WiFi/WiFiServer.h
@@ -17,8 +17,8 @@ public:
   WiFiServer(uint16_t);
   WiFiClient available(uint8_t* status = NULL);
   void begin();
-  virtual void write(uint8_t);
-  virtual void write(const uint8_t *buf, size_t size);
+  virtual size_t write(uint8_t);
+  virtual size_t write(const uint8_t *buf, size_t size);
 };
 
 #endif