diff --git a/runtime/doc/helphelp.txt b/runtime/doc/helphelp.txt
index 32051d4..20f1ed8 100644
--- a/runtime/doc/helphelp.txt
+++ b/runtime/doc/helphelp.txt
@@ -314,7 +314,7 @@
 date of the file.  Each field is separated by a tab.
 
 At the bottom of the help file, place a Vim modeline to set the 'textwidth'
-and 'tabstop' options and the 'filetype' to 'help'.  Never set a global option
+and 'tabstop' options and the 'filetype' to "help".  Never set a global option
 in such a modeline, that can have consequences undesired by whoever reads that
 help.