potmeter returns values 0, 1, 2 & 3 instead of 0 - 1023

Circuit is like here https://www.arduino.cc/en/tutorial/potentiometer

#include <Wire.h>

int status_module = 0; 
#define potmeter A3

void setup() {
  Serial.begin(9600);
  Wire.begin(1);               
  Wire.onRequest(requestEvent); 
}

void loop() {
int pot_waarde = analogRead(potmeter); 
Serial.println (pot_waarde);
}

//SUB-ROUTINES
void requestEvent() { 
  Wire.write(status_module);
}