diff --git a/src/chrome/content/rules/IppenDigital.xml b/src/chrome/content/rules/IppenDigital.xml
new file mode 100644
index 000000000000..5acd5214a014
--- /dev/null
+++ b/src/chrome/content/rules/IppenDigital.xml
@@ -0,0 +1,8 @@
+<ruleset name="Ippen-Digital">
+
+	<target host="idcdn.de" />
+	<!-- cert mismatch for (www.\)ippen-digital.de -->
+
+	<rule from="^http:" to="https:"/>
+
+</ruleset>