diff --git a/src/Handler/Utils/Communication.hs b/src/Handler/Utils/Communication.hs
index 0bc8e3f38..5d2365721 100644
--- a/src/Handler/Utils/Communication.hs
+++ b/src/Handler/Utils/Communication.hs
@@ -27,6 +27,7 @@ import qualified Data.Set as Set
 
 import qualified Data.Conduit.Combinators as C
 
+{-# ANN module ("HLint: ignore Functor law" :: String) #-}
 
 data RecipientGroup = RGCourseParticipants | RGCourseLecturers | RGCourseCorrectors | RGCourseTutors | RGCourseParticipantsInTutorial | RGCourseUnacceptedApplicants
   -- WARNING: no RenderMessage instance, but a pattern match in templates/widgets/communication/recipientLayout.hamlet that needs to be extended