diff --git a/plugins/main/loopback/loopback_test.go b/plugins/main/loopback/loopback_test.go
index 9ae1198d..cf10e1a6 100644
--- a/plugins/main/loopback/loopback_test.go
+++ b/plugins/main/loopback/loopback_test.go
@@ -10,6 +10,7 @@ import (
 	"github.com/appc/cni/pkg/ns"
 	. "github.com/onsi/ginkgo"
 	. "github.com/onsi/gomega"
+	"github.com/onsi/gomega/gbytes"
 	"github.com/onsi/gomega/gexec"
 )
 
@@ -54,6 +55,7 @@ var _ = Describe("Loopback", func() {
 			session, err := gexec.Start(command, GinkgoWriter, GinkgoWriter)
 			Expect(err).NotTo(HaveOccurred())
 
+			Eventually(session).Should(gbytes.Say(`{.*}`))
 			Eventually(session).Should(gexec.Exit(0))
 
 			var lo *net.Interface