diff --git a/md2html b/md2html
index 4590889..8a4cd40 100755
--- a/md2html
+++ b/md2html
@@ -1,7 +1,7 @@
 #!/bin/sh
 tmpfile=".$$.$1.md2html"
 
-awk '
+awk "$@" '
 BEGIN {
   indent = 0
   prefix = "html/body/"