diff --git a/tests/linux64/test.icl b/tests/linux64/test.icl
index 2bf0fd4b6358a0a7b9f10c2b10f2ef14686df902..115216cf165198198071efb2e59fcbf97bf34194 100644
--- a/tests/linux64/test.icl
+++ b/tests/linux64/test.icl
@@ -138,6 +138,7 @@ import qualified Data.OrdList
 import qualified Data.Queue
 import qualified Data.Real
 import qualified Data.Set
+import qualified Data.SetBy
 import qualified Data.Set.GenJSON
 import qualified Data.Set.Gast
 import qualified Data.Stack