diff --git a/Markdown.pl b/Markdown.pl
index 3813b27..97224d2 100755
--- a/Markdown.pl
+++ b/Markdown.pl
@@ -2042,7 +2042,7 @@ sub _HTMLEncode {
 
     # Remaining entities now
     $text =~ s/\042/"/g;
-    $text =~ s/\047/'/g;
+    $text =~ s/\047/'/g; # Some older browsers do not grok '
     $text =~ s/</&lt;/g;
     $text =~ s/>/&gt;/g;