diff --git a/libnetwork/docs/design.md b/libnetwork/docs/design.md
index e6057cc597..fd53d02e2b 100644
--- a/libnetwork/docs/design.md
+++ b/libnetwork/docs/design.md
@@ -30,7 +30,7 @@ A Sandbox may contain *many* endpoints from *multiple* networks.
 
 An Endpoint joins a Sandbox to a Network.
 An implementation of an Endpoint could be a `veth` pair, an Open vSwitch internal port or similar.
-An Endpoint can belong to *only one* network but may only belong to *one* Sandbox.
+An Endpoint can belong to only one network and it can belong to only one Sandbox, if connected.
 
 **Network**