diff --git a/config/config_test.go b/config/config_test.go
index 1766ad8..830ea4c 100644
--- a/config/config_test.go
+++ b/config/config_test.go
@@ -14,6 +14,10 @@ import (
 func TestNew(t *testing.T) {
 	os.Clearenv()
 	_, f, _, _ := runtime.Caller(0)
+	foundIface, err := chooseInterface(application.Flags{})
+	if err != nil {
+		panic(err)
+	}
 	testdir := filepath.Join(filepath.Dir(f), "testdata")
 	tempfile, err := ioutil.TempFile("", "qrcp*tmp.yml")
 	if err != nil {
@@ -31,10 +35,6 @@ func TestNew(t *testing.T) {
 	type args struct {
 		app application.App
 	}
-	foundIface, err := chooseInterface(application.Flags{})
-	if err != nil {
-		panic(err)
-	}
 	tests := []struct {
 		name string
 		args args
@@ -123,7 +123,9 @@ func TestNew(t *testing.T) {
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			if got := New(tt.args.app); !reflect.DeepEqual(got, tt.want) {
+			got := New(tt.args.app)
+			got.Interface = foundIface
+			if !reflect.DeepEqual(got, tt.want) {
 				t.Errorf("New() = %v, want %v", got, tt.want)
 			}
 		})
diff --git a/config/testdata/full.yml b/config/testdata/full.yml
index d6495ae..820d917 100644
--- a/config/testdata/full.yml
+++ b/config/testdata/full.yml
@@ -1,4 +1,4 @@
-interface: wlo1
+interface: __PLACEHOLDER_INTERFACE__
 port: 18080
 bind: '10.20.30.40'
 keepAlive: false
diff --git a/config/testdata/qrcp.yml b/config/testdata/qrcp.yml
index 9fad0c2..2f74793 100644
--- a/config/testdata/qrcp.yml
+++ b/config/testdata/qrcp.yml
@@ -1 +1 @@
-interface: wlo1
+interface: __PLACEHOLDER_INTERFACE__