diff --git a/src/Simplex/Messaging/Agent.hs b/src/Simplex/Messaging/Agent.hs
index 8c2043a81..6fa24f9e1 100644
--- a/src/Simplex/Messaging/Agent.hs
+++ b/src/Simplex/Messaging/Agent.hs
@@ -109,6 +109,7 @@ module Simplex.Messaging.Agent
   )
 where
 
+import Control.Applicative (liftA2)
 import Control.Logger.Simple (logError, logInfo, showText)
 import Control.Monad
 import Control.Monad.Except