diff --git a/src/Vervis/Widget/Ticket.hs b/src/Vervis/Widget/Ticket.hs
index a048c54..28677df 100644
--- a/src/Vervis/Widget/Ticket.hs
+++ b/src/Vervis/Widget/Ticket.hs
@@ -27,6 +27,7 @@ import Data.HashMap.Lazy (HashMap)
import Data.Maybe (mapMaybe)
import Data.Text (Text)
import Data.Time.Clock (UTCTime)
+import Text.Blaze.Html (preEscapedToHtml)
import Yesod.Core (MonadHandler, newIdent)
import Yesod.Core.Handler (getCurrentRoute, getRequest, YesodRequest (..))
import Yesod.Core.Widget (whamlet)
diff --git a/templates/ticket/one.hamlet b/templates/ticket/one.hamlet
index 0d3a57d..9e82c78 100644
--- a/templates/ticket/one.hamlet
+++ b/templates/ticket/one.hamlet
@@ -12,7 +12,7 @@ $# You should have received a copy of the CC0 Public Domain Dedication along
$# with this software. If not, see
$#