diff --git a/test/disable-modem b/test/disable-modem
index dee34fdf..47b85319 100755
--- a/test/disable-modem
+++ b/test/disable-modem
@@ -1,15 +1,17 @@
 #!/usr/bin/python
 
 import dbus
+import sys
 
 bus = dbus.SystemBus()
 
-manager = dbus.Interface(bus.get_object('org.ofono', '/'),
-						'org.ofono.Manager')
-
-properties = manager.GetProperties()
-
-path = properties["Modems"][0]
+if len(sys.argv) == 2:
+	path = sys.argv[1]
+else:
+	manager = dbus.Interface(bus.get_object('org.ofono', '/'),
+			'org.ofono.Manager')
+	properties = manager.GetProperties()
+	path = properties["Modems"][0]
 
 modem = dbus.Interface(bus.get_object('org.ofono', path),
 						'org.ofono.Modem')
diff --git a/test/enable-modem b/test/enable-modem
index 0f9f604f..86362af7 100755
--- a/test/enable-modem
+++ b/test/enable-modem
@@ -1,15 +1,17 @@
 #!/usr/bin/python
 
 import dbus
+import sys
 
 bus = dbus.SystemBus()
 
-manager = dbus.Interface(bus.get_object('org.ofono', '/'),
-						'org.ofono.Manager')
-
-properties = manager.GetProperties()
-
-path = properties["Modems"][0]
+if len(sys.argv) == 2:
+	path = sys.argv[1]
+else:
+	manager = dbus.Interface(bus.get_object('org.ofono', '/'),
+			'org.ofono.Manager')
+	properties = manager.GetProperties()
+	path = properties["Modems"][0]
 
 modem = dbus.Interface(bus.get_object('org.ofono', path),
 						'org.ofono.Modem')