diff --git a/plugins/url_title.lua b/plugins/url_title.lua
index 329b127..3b8c774 100644
--- a/plugins/url_title.lua
+++ b/plugins/url_title.lua
@@ -17,6 +17,12 @@ function getTitle(page)
   s = string.gsub(s, "»", "»")
   s = string.gsub(s, "“", "“")
   s = string.gsub(s, "”", "”")
+  s = string.gsub(s, "ä", "ä")
+  s = string.gsub(s, "Ä", "Ä")
+  s = string.gsub(s, "ö", "ö")
+  s = string.gsub(s, "Ö", "Ö")
+  s = string.gsub(s, "ü", "ü")
+  s = string.gsub(s, "Ü", "Ü")
 
   -- Put all the tags in lowercase.
   s = string.gsub(s, "(<[^ >]+)", string.lower)