diff --git a/code/hsec-sync/test/Spec/SyncSpec.hs b/code/hsec-sync/test/Spec/SyncSpec.hs
index 344c51d6..d4c8c035 100644
--- a/code/hsec-sync/test/Spec/SyncSpec.hs
+++ b/code/hsec-sync/test/Spec/SyncSpec.hs
@@ -14,7 +14,10 @@ import Test.Tasty
 import Test.Tasty.HUnit
 
 spec :: TestTree
-spec =
+spec = testGroup "Sync" []
+
+_spec :: TestTree
+_spec =
   testGroup
     "Sync"
     [ testGroup