diff --git a/lib/doc/de/UserGuide.lyx b/lib/doc/de/UserGuide.lyx
index 3bb0c78030..086a0f40bf 100644
--- a/lib/doc/de/UserGuide.lyx
+++ b/lib/doc/de/UserGuide.lyx
@@ -68,7 +68,7 @@
 \end_preamble
 \options bibtotoc, idxtotoc
 \language ngerman
-\inputencoding default
+\inputencoding auto
 \font_roman default
 \font_sans default
 \font_typewriter default