diff --git a/src/MdToHTML.hs b/src/MdToHTML.hs
index aeb9bdb..b819607 100644
--- a/src/MdToHTML.hs
+++ b/src/MdToHTML.hs
@@ -10,6 +10,7 @@ import Control.Monad.Combinators (count)
 import Data.Char
 import Data.List
 import Data.Ord (comparing)
+import Data.String.Utils
 import qualified Data.Text as T
 import Data.Void
 import Debug.Trace