diff --git a/middleware/etcd/lookup_test.go b/middleware/etcd/lookup_test.go
index b651de67c..5d5b53c4e 100644
--- a/middleware/etcd/lookup_test.go
+++ b/middleware/etcd/lookup_test.go
@@ -1,3 +1,5 @@
+// +build net
+
 package etcd
 
 // etcd needs to be running on http://127.0.0.1:2379