diff --git a/main.py b/main.py
index ee9e691..383a76e 100755
--- a/main.py
+++ b/main.py
@@ -8,6 +8,7 @@ import signal
 import aioprocessing
 from dotenv import load_dotenv
 
+from src.const import DEFAULT_EXPORT_INTERVAL, DEFAULT_MODE
 from src.mempool import WebSocketThread, QueueProcessor
 from src.db import Handler, periodic_export
 
@@ -42,10 +43,10 @@ def load_cfg(dotenv_path=".env"):
     cfg["EXPORT_INTERVAL"] = os.getenv("EXPORT_INTERVAL")
 
     if cfg["MODE"] is None:
-        cfg["MODE"] = "production"
+        cfg["MODE"] = DEFAULT_MODE
 
     if cfg["EXPORT_INTERVAL"] is None:
-        cfg["EXPORT_INTERVAL"] = 24 * 60 * 60  # 24 hours in seconds
+        cfg["EXPORT_INTERVAL"] = DEFAULT_EXPORT_INTERVAL
     else:
         cfg["EXPORT_INTERVAL"] = int(cfg["EXPORT_INTERVAL"])
 
diff --git a/src/const.py b/src/const.py
index 19536dc..fb8a640 100644
--- a/src/const.py
+++ b/src/const.py
@@ -1,7 +1,10 @@
 import json
 
+DEFAULT_MODE = "production"
+
 WS_ADDR = "wss://ws.blockchain.info/coins"
 SUB_MSG = json.dumps({"coin": "eth", "command": "subscribe", "entity": "confirmed_transaction"})
 WS_RECONNECT_PAUSE = 2  # Seconds
 
 DEFAULT_EXPORT_PATH = "./data/export.json"
+DEFAULT_EXPORT_INTERVAL = 10800  # 3 hours