diff --git a/libraries/WiFi/src/WiFiClient.cpp b/libraries/WiFi/src/WiFiClient.cpp
index e422b63673d0bf3e09df5730145c67c3f00f4b12..3913208ba0bf3ddab1218e3cf122f10f20b8f4a0 100644
--- a/libraries/WiFi/src/WiFiClient.cpp
+++ b/libraries/WiFi/src/WiFiClient.cpp
@@ -196,8 +196,8 @@ WiFiClient & WiFiClient::operator=(const WiFiClient &other)
 
 void WiFiClient::stop()
 {
-    clientSocketHandle = NULL;
-    _rxBuffer = NULL;
+    clientSocketHandle.reset(); // clientSocketHandle = NULL;
+    _rxBuffer.reset(); // _rxBuffer = NULL;
     _connected = false;
 }