diff --git a/src/Effects/Log.hs b/src/Effects/Log.hs
index d8e9c88..aee92d7 100644
--- a/src/Effects/Log.hs
+++ b/src/Effects/Log.hs
@@ -57,7 +57,7 @@ instance LogData LB.ByteString where
     toLog = toLog . LT.decodeUtf8With T.lenientDecode
 
 data Log :: Effect where
-  Log :: (LogData a) => Severity -> a -> Log m ()
+  Log :: Severity -> T.Builder -> Log m ()
 
 makeEffect ''Log
 
@@ -84,7 +84,7 @@ runLogWithQsem lock logger e = do
           lock' <- ask
           bracket_ (waitQSem lock') (signalQSem lock') $ do
             t <- currentTimeB
-            liftIO $ cmap (addTime t . fmtMessage) logger <& toLog msg `WithSeverity` sev
+            liftIO $ cmap (addTime t . fmtMessage) logger <& msg `WithSeverity` sev
     )
     e