diff --git a/qbittorrent_exporter/exporter.py b/qbittorrent_exporter/exporter.py
index 8405895..cb1a4f9 100644
--- a/qbittorrent_exporter/exporter.py
+++ b/qbittorrent_exporter/exporter.py
@@ -1,6 +1,6 @@
-from httplib2 import Http
 import time
 import os
+import sys
 import signal
 import faulthandler
 from qbittorrentapi import Client, TorrentStates
@@ -186,6 +186,14 @@ def main():
     logger.addHandler(logHandler)
     logger.setLevel(config["log_level"])
 
+    if not config["host"]:
+        logger.error("No host specified, please set QBITTORRENT_HOST environment variable")
+        sys.exit(1)
+    if not config["post"]:
+        logger.error("No post specified, please set QBITTORRENT_PORT environment variable")
+        sys.exit(1)
+
+
     # Register our custom collector
     logger.info("Exporter is starting up")
     REGISTRY.register(QbittorrentMetricsCollector(config))