diff --git a/cni/azure.conf b/cni/azure.conf
index e951e3546d..a008e392fc 100644
--- a/cni/azure.conf
+++ b/cni/azure.conf
@@ -2,7 +2,6 @@
   "cniVersion": "0.2.0",
   "name": "azure",
   "type": "azure-vnet",
-  "master": "eth0",
   "bridge": "azure0",
   "ipam": {
     "type": "azure-vnet-ipam"