diff --git a/src/Handler/Users.hs b/src/Handler/Users.hs
index c5968789f..8e9f05af2 100644
--- a/src/Handler/Users.hs
+++ b/src/Handler/Users.hs
@@ -100,8 +100,9 @@ getUsersR = do
           , ( "matriculation", FilterColumn $ \user (criterion :: Set.Set Text) -> if
                  | Set.null criterion -> eTrue -- TODO: why can this be eFalse and work still?
                  | otherwise          ->
-                    --  (user E.^. UserMatrikelnummer) `E.in_` (E.valList $ Set.toList criterion)
-                     user E.^. UserMatrikelnummer `E.in_` E.justList (E.valList $ Set.toList criterion)
+                     -- user E.^. UserMatrikelnummer `E.in_` E.justList (E.valList $ Set.toList criterion)
+                     Set.foldr (\needle acc -> acc E.||. (user E.^. UserMatrikelnummer) `eLike` needle) eFalse criterion
+
             )
           , ( "school", FilterColumn $ \user criterion -> if
                 | Set.null criterion -> E.val True :: E.SqlExpr (E.Value Bool)