diff --git a/akka-remote/src/main/resources/reference.conf b/akka-remote/src/main/resources/reference.conf
index 64c2e1a840..7ae3219c5d 100644
--- a/akka-remote/src/main/resources/reference.conf
+++ b/akka-remote/src/main/resources/reference.conf
@@ -116,7 +116,8 @@ akka {
       # (I&O) Increase this if you want to be able to send messages with large payloads
       message-frame-size = 1 MiB
 
-      # (O) Timeout duration
+      # (O) Sets the connectTimeoutMillis of all outbound connections,
+      # i.e. how long a connect may take until it is timed out
       connection-timeout = 120s
 
       # (I) Sets the size of the connection backlog