diff --git a/testdata/sys/devices/platform/soc/soc:pcie/pci0000:00/0000:00:02.0/0000:02:00.0/net/wlan1/address b/testdata/sys/devices/platform/soc/soc:pcie/pci0000:00/0000:00:02.0/0000:02:00.0/net/wlan1/address
deleted file mode 100644
index 8113f4e..0000000
--- a/testdata/sys/devices/platform/soc/soc:pcie/pci0000:00/0000:00:02.0/0000:02:00.0/net/wlan1/address
+++ /dev/null
@@ -1 +0,0 @@
-00:25:9c:14:59:6d
diff --git a/uci_wireless_interface_test.go b/uci_wireless_interface_test.go
index 37a0196..d4c739f 100644
--- a/uci_wireless_interface_test.go
+++ b/uci_wireless_interface_test.go
@@ -1,6 +1,9 @@
 package owrt
 
 import (
+	"fmt"
+	"io/ioutil"
+	"os"
 	"testing"
 )
 
@@ -29,12 +32,24 @@ func TestGetSysDevName(t *testing.T) {
 	iface.Encryption = ifaceEnc
 	iface.Key = ifaceKey
 
-	if g, e := iface.GetSysDevName("testdata/sys/"), "wlan1"; g != e {
+	testDirectory := "/tmp/sys/devices/platform/soc/soc:pcie/pci0000:00/0000:00:02.0/0000:02:00.0/net/wlan1/"
+	if err := os.MkdirAll(testDirectory, os.ModePerm); err != nil {
+		t.Fatalf("Impossible to setup test directory with test file")
+	}
+
+	testFile := fmt.Sprintf("%s/address", testDirectory)
+	d1 := []byte("00:00:00:84:00:63\n")
+	err := ioutil.WriteFile(testFile, d1, 0644)
+	if err != nil {
+		t.Fatalf("Impossible to setup test directory with test file")
+	}
+
+	if g, e := iface.GetSysDevName("/tmp/sys/"), "wlan1"; g != e {
 		t.Fatalf("UCIWirelessInterface.GetDeviceSysName() failed ! Got: %s Expect: %s", g, e)
 	}
 
 	iface.SysDevName = "wlanX"
-	if g, e := iface.GetSysDevName("testdata/sys/"), "wlanX"; g != e {
+	if g, e := iface.GetSysDevName("/tmp/sys/"), "wlanX"; g != e {
 		t.Fatalf("UCIWirelessInterface.GetDeviceSysName() failed ! Got: %s Expect: %s", g, e)
 	}
 }