diff --git a/src/chrome/content/rules/Technical_University_Munich.xml b/src/chrome/content/rules/Technical_University_Munich.xml
index f0e8f4a95036..e9120ac06200 100644
--- a/src/chrome/content/rules/Technical_University_Munich.xml
+++ b/src/chrome/content/rules/Technical_University_Munich.xml
@@ -5,7 +5,7 @@
 
 			- (www.)
 			- adm9.in.tum.de
-			- ias.in
+			- lrr.in
 			- sec.in
 			- www21.in
 			- www.lehre
@@ -14,9 +14,6 @@
 			- mediatum.ub
 			- www
 
-		- ias.cs.tum.edu
-
-		- ias.informatik.tu-muenchen.de
 		- mailmanbroy.informatik.tu-muenchen.de
 		- www.tu-muenchen.de
 
@@ -28,11 +25,8 @@
 
 		- in.tum.de
 		- adm9.in.tum.de
-		- ias.in.tum.de
 		- www.in.tum.de
 		- www.tum.de
-		- ias.cs.tum.edu
-		- ias.informatik.tu-muenchen.de
 
 
 	Mixed content:
@@ -45,13 +39,28 @@
 
 	* Secured by us
 
+	Expired certificates:
+		- ias.in
+		- ias.cs.tum.edu
+		- ias.informatik.tu-muenchen.de
 -->
 <ruleset name="Technical University Munich (partial)">
 
-	<target host="*.tum.de" />
-	<target host="ias.cs.tum.edu" />
-	<target host="*.tu-muenchen.de" />
-
+	<target host="www.tu-muenchen.de" />
+
+	<target host="www.tum.de" />
+	<target host="www.lehre.tum.de" />
+	<target host="www.lehren.tum.de" />
+	<target host="www.piwik.tum.de" />
+	<target host="mediatum.ub.tum.de" />
+	<target host="mailmanbroy.informatik.tu-muenchen.de" />
+	<target host="adm9.in.tum.de" />
+	<target host="www.in.tum.de" />
+	<target host="www21.in.tum.de" />
+	<target host="www.lrr.in.tum.de" />
+	<target host="www.sec.in.tum.de" />
+	<target host="www.informatik.tu-muenchen.de" />
+	<target host="isabelle.in.tum.de" />
 
 	<!--	Not secured by server:
 					-->
@@ -59,23 +68,7 @@
 	<!--securecookie host="^mediatum\.ub\.tum\.de$" name="^PSESSION$" /-->
 
 	<securecookie host="^(?:in|(?:adm9|ias|sec|www)\.in|mediatum\.ub|www(?:\.lehren?)?)?\.tum\.de$" name=".+" />
-	<securecookie host="^ias\.cs\.tum\.edu$" name=".+" />
-	<securecookie host="^(?:www|ias\.informatik)\.tu-muenchen\.de$" name=".+" />
-
-
-	<rule from="^http://www(\.lehren?|\.piwik)?\.tum\.de/"
-		to="https://www$1.tum.de/" />
-
-	<rule from="^http://((?:(?:ias|sec|www|www21)\.)?in|mediatum\.ub)\.tum\.de/"
-		to="https://$1.tum.de/" />
-
-	<rule from="^http://ias\.cs\.tum\.edu/"
-		to="https://ias.cs.tum.edu/" />
-
-	<rule from="^http://((?:ias|mailmanbroy)\.informatik|www)\.tu-muenchen\.de/"
-		to="https://$1.tu-muenchen.de/" />
-
-	<rule from="^http://isabelle\.in\.tum\.de/"
-		to="https://isabelle.in.tum.de/" />
+	<securecookie host="^(?:www\.informatik)\.tu-muenchen\.de$" name=".+" />
 
+	<rule from="^http:" to="https:" />
 </ruleset>
diff --git a/src/chrome/content/rules/Tum.de.xml b/src/chrome/content/rules/Tum.de.xml
deleted file mode 100644
index 0d06d0e26b3a..000000000000
--- a/src/chrome/content/rules/Tum.de.xml
+++ /dev/null
@@ -1,10 +0,0 @@
-<!--
-Disabled by https-everywhere-checker because:
-Fetch error: http://tum.de/ => https://www.tum.de/: (6, 'Could not resolve host: tum.de')
--->
-<ruleset name="Tum.de" default_off='failed ruleset test'>
-  <target host="tum.de" />
-  <target host="www.tum.de" />
-
-  <rule from="^http://(?:www\.)?tum\.de/" to="https://www.tum.de/" />
-</ruleset>