fix grammar in NetworkInUse exception

bug 1121555

Change-Id: Ie06ef45d066505b0ec1cd31e73c43ae6985afcde

diff --git a/quantum/common/exceptions.py b/quantum/common/exceptions.py
index cc91eeca57ac9e35c6fc72bd61152ea0cc0923ba..9c041d66db0bc6b0f80434ba19114244a24f2926 100644 (file)
--- a/quantum/common/exceptions.py
+++ b/quantum/common/exceptions.py
@@ -94,7 +94,7 @@ class InUse(QuantumException):
 
 class NetworkInUse(InUse):
     message = _("Unable to complete operation on network %(net_id)s. "
-                "There is one or more ports still in use on the network.")
+                "There are one or more ports still in use on the network.")
 
 
 class SubnetInUse(InUse):