diff --git a/math/texutil.ml b/math/texutil.ml
index 6f42cef6c51..40d75656271 100644
--- a/math/texutil.ml
+++ b/math/texutil.ml
@@ -418,6 +418,7 @@ let find = function
     | "\\atop"             -> FUN_INFIX "\\atop "
     | "\\binom"            -> FUN_AR2 "\\binom "
     | "\\frac"             -> FUN_AR2h ("\\frac ", fun num den -> Html.html_render [num], "<hr style=\"{background: black}\">", Html.html_render [den])
+    | "\\cfrac"            -> (tex_use_ams (); FUN_AR2h ("\\cfrac ", fun num den -> Html.html_render [num], "<hr style=\"{background: black}\">", Html.html_render [den]))
     | "\\over"             -> FUN_INFIXh ("\\over ", fun num den -> Html.html_render num, "<hr style=\"{background: black}\">", Html.html_render den)
     | "\\sqrt"             -> FUN_AR1 "\\sqrt "
     | "\\pmod"             -> FUN_AR1hl ("\\pmod ", ("(mod ", ")"))