Unsigned long printed as long

Created by: pinps

Hi, I am trying to print an unsigned long value ID on Arduin Uno, but it seems to print it as a long: Code: void setup() { Serial.begin(9600); StaticJsonBuffer<200> jsonBuffer; JsonObject& root = jsonBuffer.createObject(); root["id"] = 2345678901; root.printTo(Serial); } Output: {"id":-1949288395}

Do I need to specify some how it is an unsigned or how to fix this behavior?

-Pinps