diff --git a/doc/comedilib.sgml b/doc/comedilib.sgml
index 59e14c6..92a782c 100644
--- a/doc/comedilib.sgml
+++ b/doc/comedilib.sgml
@@ -9,7 +9,7 @@
 <!ENTITY funcref SYSTEM "funcref.sgml">
 <!ENTITY glossary SYSTEM "glossary.sgml">
 <!ENTITY comedi "<acronym>Comedi</acronym>">
-<!ENTITY uuml "u">
+<!ENTITY uuml "ue">
 <!ENTITY hellip "...">
 ]>