diff --git a/hydra-node/src/Hydra/Node/Network.hs b/hydra-node/src/Hydra/Node/Network.hs
index bb86b29748a..3e4542dc6a7 100644
--- a/hydra-node/src/Hydra/Node/Network.hs
+++ b/hydra-node/src/Hydra/Node/Network.hs
@@ -66,7 +66,7 @@ module Hydra.Node.Network (
   withNetwork,
   withFlipHeartbeats,
   configureMessagePersistence,
-  acksFile
+  acksFile,
 ) where
 
 import Hydra.Prelude hiding (fromList, replicate)