diff --git a/examples/esp8266/WebSocketClientSocketIOack/WebSocketClientSocketIOack.ino b/examples/esp8266/WebSocketClientSocketIOack/WebSocketClientSocketIOack.ino
index 0dabb49..f0f8991 100644
--- a/examples/esp8266/WebSocketClientSocketIOack/WebSocketClientSocketIOack.ino
+++ b/examples/esp8266/WebSocketClientSocketIOack/WebSocketClientSocketIOack.ino
@@ -147,7 +147,7 @@ void loop() {
 
         // add payload (parameters) for the event
         JsonObject param1 = array.createNestedObject();
-        param1["now"] = (utin32_t) now;
+        param1["now"] = (uint32_t) now;
 
         // JSON to String (serializion)
         String output;