diff --git a/doc/mkref b/doc/mkref
index b3a33f9..e0dab58 100755
--- a/doc/mkref
+++ b/doc/mkref
@@ -8,7 +8,7 @@ $end = "";
 
 print
 "<!--This file is autogenerated.  Do not edit-->
-<section id="functionreference">
+<section id=\"functionreference\">
   <title>
     Comedi Function Reference
   </title>