diff --git a/app.py b/app.py
index 1c13944..0cd42bc 100644
--- a/app.py
+++ b/app.py
@@ -33,16 +33,14 @@ item6 = 0
 app.logger.info('Starting erdbeerhannah v' + version)
 
 # prevent cached responses
+# https://stackoverflow.com/questions/47376744/how-to-prevent-cached-response-flask-server-using-chrome
 @app.after_request
 def add_header(r):
     """
     Add headers to both force latest IE rendering engine or Chrome Frame,
     and also to cache the rendered page for 10 minutes.
     """
-    r.headers["Cache-Control"] = "no-cache, no-store, must-revalidate"
-    r.headers["Pragma"] = "no-cache"
-    r.headers["Expires"] = "0"
-    r.headers['Cache-Control'] = 'public, max-age=0'
+    r.headers["Cache-Control"] = "no-store, max-age=0"
     return r
 
 @app.route("/", methods=["GET", "POST"])