diff --git a/agent/src/config.py b/agent/src/config.py
index c5ae3f3..0784f0c 100644
--- a/agent/src/config.py
+++ b/agent/src/config.py
@@ -1,18 +1,17 @@
 import os
 
-
 def try_parse(type, value: str):
     try:
         return type(value)
     except Exception:
         return None
 
-
-USER_ID = try_parse(int, os.environ.get("USER_ID")) or 1
 # MQTT config
 MQTT_BROKER_HOST = os.environ.get("MQTT_BROKER_HOST") or "mqtt"
 MQTT_BROKER_PORT = try_parse(int, os.environ.get("MQTT_BROKER_PORT")) or 1883
 MQTT_TOPIC = os.environ.get("MQTT_TOPIC") or "agent"
 
-# Delay for sending data to mqtt in seconds
+# Data-related config
+USER_ID = try_parse(int, os.environ.get("USER_ID")) or 1
 DELAY = try_parse(float, os.environ.get("DELAY")) or 1
+GPS_SOURCE = os.environ.get("GPS_SOURCE") or "data/gps.csv"
diff --git a/agent/src/main.py b/agent/src/main.py
index 1b43cc5..11faeda 100644
--- a/agent/src/main.py
+++ b/agent/src/main.py
@@ -42,7 +42,7 @@ def run():
     # Prepare mqtt client
     client = connect_mqtt(config.MQTT_BROKER_HOST, config.MQTT_BROKER_PORT)
     # Prepare datasource
-    datasource = FileDatasource(16384.0, "data/accelerometer.csv", "data/gps.csv", "data/parking.csv")
+    datasource = FileDatasource(16384.0, "data/accelerometer.csv", config.GPS_SOURCE, "data/parking.csv")
     # Infinity publish data
     publish(client, config.MQTT_TOPIC, datasource)