diff --git a/Doc/tools/sgmlconv/fixgenents.sh b/Doc/tools/sgmlconv/fixgenents.sh
index ebc596c444d..6fa36f45030 100755
--- a/Doc/tools/sgmlconv/fixgenents.sh
+++ b/Doc/tools/sgmlconv/fixgenents.sh
@@ -45,5 +45,4 @@ s|<geq>|\&ge;|g
 s|<ldots>|\&hellip|g
 s|<leq>|\&le;|g
 s|<version>|\&version;|g
-s|---|\&mdash;|g
 ' || exit $?