diff --git a/warp-tls/Network/Wai/Handler/WarpTLS.hs b/warp-tls/Network/Wai/Handler/WarpTLS.hs
index 418d8f4a8..6f70d1e32 100644
--- a/warp-tls/Network/Wai/Handler/WarpTLS.hs
+++ b/warp-tls/Network/Wai/Handler/WarpTLS.hs
@@ -56,7 +56,6 @@ module Network.Wai.Handler.WarpTLS (
 ) where
 
 import Control.Applicative ((<|>))
-import Control.Concurrent (newEmptyMVar, putMVar, takeMVar, forkIOWithUnmask)
 import Control.Exception (
     Exception,
     IOException,