diff --git a/Doc/lib/libweakref.tex b/Doc/lib/libweakref.tex
index 0d92ea9cd13..9062816d2d6 100644
--- a/Doc/lib/libweakref.tex
+++ b/Doc/lib/libweakref.tex
@@ -5,7 +5,7 @@
 \modulesynopsis{Support for weak references and weak dictionaries.}
 \moduleauthor{Fred L. Drake, Jr.}{fdrake@acm.org}
 \moduleauthor{Neil Schemenauer}{nas@arctrix.com}
-\moduleauthor{Martin von L\o"wis}{martin@loewis.home.cs.tu-berlin.de}
+\moduleauthor{Martin von L\"owis}{martin@loewis.home.cs.tu-berlin.de}
 \sectionauthor{Fred L. Drake, Jr.}{fdrake@acm.org}
 
 \versionadded{2.1}