diff --git a/after/syntax/c.vim b/after/syntax/c.vim
index 7d6ae2a..ad2239a 100644
--- a/after/syntax/c.vim
+++ b/after/syntax/c.vim
@@ -27,11 +27,17 @@ syn match cLabel '^\s*\w[A-Za-z0-9_]\+\ze::\@!' contains=cppAccess
 " Match Doxygen comments
 let g:c_doxygen = get(g:, 'c_doxygen', 1)
 if exists('g:c_doxygen') && g:c_doxygen
-  syn region cDoxygen oneline matchgroup=cComment start='\/\/\/\s*[\\@]brief\s\+' end='$'
+  syn region cDoxygenMarkdownMono oneline start='`' end='`'
+  syn match cDoxygenUrl /https\?:\/\/\(\w\+\(:\w\+\)\?@\)\?\([A-Za-z][-_0-9A-Za-z]*\.\)\{1,}\(\w\{2,}\.\?\)\{1,}\(:[0-9]\{1,5}\)\?\S*/
+  syn region cDoxygenComment oneline start='\/\/\/' end='$' contains=cDoxygenMarkdownMono,cDoxygenUrl,@Spell
+  syn region cDoxygen oneline matchgroup=cComment start='\/\/\/\s*[\\@]brief\s\+' end='$' contains=cDoxygenMarkdownMono,@Spell
   syn region cDoxygen oneline matchgroup=cComment start='\/\/\/\s*[\\@]tparam\s\+' end='\(\s.*$\|$\)'
   syn region cDoxygen oneline matchgroup=cComment start='\/\/\/\s*[\\@]param\(\[\(\|in\|out\|in,out\)\]\)\=\s\+' end='\(\s.*$\|$\)'
   syn match cDoxygenTodo 'todo' contained
-  syn region cComment oneline start='\/\/\/\s*[\\@]\zetodo\s\+' end='$' contains=cDoxygenTodo
+  syn region cComment oneline start='\/\/\/\s*[\\@]\zetodo\s\+' end='$' contains=cDoxygenTodo,@Spell
+  hi default link cDoxygenMarkdownMono SpecialComment
+  hi default link cDoxygenUrl Underlined
+  hi default link cDoxygenComment cComment
   hi default link cDoxygen SpecialComment
   hi default link cDoxygenTodo Todo
 endif