diff --git a/modules/apps/27-interchain-accounts/controller/keeper/msg_server.go b/modules/apps/27-interchain-accounts/controller/keeper/msg_server.go
index 2eacba9fc26..abb90ffca4b 100644
--- a/modules/apps/27-interchain-accounts/controller/keeper/msg_server.go
+++ b/modules/apps/27-interchain-accounts/controller/keeper/msg_server.go
@@ -49,7 +49,8 @@ func (s msgServer) SendTx(goCtx context.Context, msg *types.MsgSendTx) (*types.M
 		return nil, err
 	}
 
-	// explicitly passing nil as the argument is discarded as the channel capability is retrieved in SendTx.
+	// the absolute timeout value is calculated using the controller chain block time + the relative timeout value
+	// this assumes time synchrony to a certain degree between the controller and counterparty host chain
 	absoluteTimeout := uint64(ctx.BlockTime().UnixNano()) + msg.RelativeTimeout
 	seq, err := s.sendTx(ctx, msg.ConnectionId, portID, msg.PacketData, absoluteTimeout)
 	if err != nil {