diff --git a/src/core/Akka/Configuration/Pigeon.conf b/src/core/Akka/Configuration/Pigeon.conf
index 5d9171e23aa..fc1bb030473 100644
--- a/src/core/Akka/Configuration/Pigeon.conf
+++ b/src/core/Akka/Configuration/Pigeon.conf
@@ -171,7 +171,7 @@ akka {
         nr-of-instances = 1
  
         # within is the timeout used for routers containing future calls
-        within = 5
+        within = 5 s
  
         # number of virtual nodes per node for consistent-hashing router
         virtual-nodes-factor = 10
@@ -690,4 +690,4 @@ akka {
       }
     }
   }
-}
\ No newline at end of file
+}