diff --git a/lib/Text/Dokuwiki/Regexps.pm b/lib/Text/Dokuwiki/Regexps.pm
index 730344f..5443843 100644
--- a/lib/Text/Dokuwiki/Regexps.pm
+++ b/lib/Text/Dokuwiki/Regexps.pm
@@ -16,7 +16,7 @@ $regexps->{header} = qr/
   \s*               # leading spaces
   (?<header> .+? )  # header text
   $SP*              # trailing spaces
-  (?: \g{line}? )   # header mark (exactly same as above)
+  (?: \g{line} )    # header mark (exactly same as above)
   (?: $EOL | $)     # newline or file end
 )
 /mx;