diff --git a/README.md b/README.md
index 7f116b7..c66d384 100644
--- a/README.md
+++ b/README.md
@@ -19,6 +19,7 @@ Create `config.cfg` with the following contents and edit values for your needs:
 
 ```
 PROMETHEUS_API_BASE="http://[::1]:9090"
+PROMETHEUS_QUERY='(sum_over_time(up{job="node-exporter"}[6h]) / count_over_time(up{job="node-exporter"}[6h]))[14d:6h]'
 ```
 
 Starten und updaten lässt sich die Flask-App folgendermaßen:
diff --git a/uptimestatus/__init__.py b/uptimestatus/__init__.py
index 29e3436..e81a3da 100644
--- a/uptimestatus/__init__.py
+++ b/uptimestatus/__init__.py
@@ -6,6 +6,7 @@ import os
 app = Flask(__name__)
 
 app.config["PROMETHEUS_API_BASE"] = "http://[::1]:9090"
+app.config["PROMETHEUS_QUERY"] = '(sum_over_time(up{job="node-exporter"}[6h]) / count_over_time(up{job="node-exporter"}[6h]))[14d:6h]'
 
 if "UPTIMESTATUS_SETTINGS" in os.environ:
     app.config.from_envvar('UPTIMESTATUS_SETTINGS')
diff --git a/uptimestatus/views.py b/uptimestatus/views.py
index 9486988..b72bccb 100644
--- a/uptimestatus/views.py
+++ b/uptimestatus/views.py
@@ -6,10 +6,11 @@ from .utils import process_instance
 from flask import render_template
 import json
 import requests
+import urllib.parse
 
 @app.route("/")
 def status():
-    r = requests.get(app.config["PROMETHEUS_API_BASE"] + "/api/v1/query?query=%28sum_over_time%28up%7Bjob%3D%22node-exporter%22%7D%5B6h%5D%29+%2F+count_over_time%28up%7Bjob%3D%22node-exporter%22%7D%5B6h%5D%29%29%5B14d%3A6h%5D")
+    r = requests.get(app.config["PROMETHEUS_API_BASE"] + "/api/v1/query?" + urllib.parse.urlencode({'query': app.config["PROMETHEUS_QUERY"]}))
     j = json.loads(r.text)
     metrics = sorted(map(process_instance, j["data"]["result"]), key=lambda m: m["name"])
     return render_template("status.html", metrics=metrics)