diff --git a/src/MdToHTML.hs b/src/MdToHTML.hs
index b57efd9..1da914f 100644
--- a/src/MdToHTML.hs
+++ b/src/MdToHTML.hs
@@ -51,7 +51,7 @@ instance Show MdToken where
   show (Line tokens) = concatMap show tokens
   show Linebreak = "<br>"
   show SingleNewline = " "
-  show HorizontalRule = "---------"
+  show HorizontalRule = "<hr>"
   show (Blockquote tokens) = "<blockquote>" ++ concatMap show tokens ++ "</blockquote>"
   show (UnordList tokens) = "<ul>" ++ concatMap (prepend "<li>" . append "</li>" . show) tokens ++ "</ul>"
   show (OrdList tokens) = "<ol>" ++ concatMap (prepend "<li>" . append "</li>" . show) tokens ++ "</ol>"