diff --git a/etc/etags.1 b/etc/etags.1
index 8aa2fd51750..5bb43707f6e 100644
--- a/etc/etags.1
+++ b/etc/etags.1
@@ -50,7 +50,7 @@ format understood by
 .BR vi ( 1 )\c
 \&.  Both forms of the program understand
 the syntax of C, Objective C, C++, Java, Fortran, Ada, Cobol, Erlang, HTML,
-LaTeX, Emacs Lisp/Common Lisp, makefiles, Pascal, Perl, PHP, Postscript,
+LaTeX, Emacs Lisp/Common Lisp, Lua, makefile, Pascal, Perl, PHP, Postscript,
 Python, Prolog, Scheme and
 most assembler\-like syntaxes.
 Both forms read the files specified on the command line, and write a tag