diff --git a/nova/tests/virt/libvirt/test_volume.py b/nova/tests/virt/libvirt/test_volume.py
index bbd7cef3dac7..6b8647cdccfd 100644
--- a/nova/tests/virt/libvirt/test_volume.py
+++ b/nova/tests/virt/libvirt/test_volume.py
@@ -241,6 +241,12 @@ class LibvirtVolumeTestCase(test.NoDBTestCase):
                 }
         }
 
+    def test_rescan_multipath(self):
+        libvirt_driver = volume.LibvirtISCSIVolumeDriver(self.fake_conn)
+        libvirt_driver._rescan_multipath()
+        expected_multipath_cmd = ('multipath', '-r')
+        self.assertIn(expected_multipath_cmd, self.executes)
+
     def test_libvirt_iscsi_driver(self):
         # NOTE(vish) exists is to make driver assume connecting worked
         self.stubs.Set(os.path, 'exists', lambda x: True)
diff --git a/nova/virt/libvirt/volume.py b/nova/virt/libvirt/volume.py
index 3daf3554d772..8e10271c157d 100644
--- a/nova/virt/libvirt/volume.py
+++ b/nova/virt/libvirt/volume.py
@@ -587,7 +587,7 @@ class LibvirtISCSIVolumeDriver(LibvirtBaseVolumeDriver):
                                 check_exit_code=[0, 1, 21, 255])
 
     def _rescan_multipath(self):
-        self._run_multipath('-r', check_exit_code=[0, 1, 21])
+        self._run_multipath(['-r'], check_exit_code=[0, 1, 21])
 
     def _get_host_device(self, iscsi_properties):
         return ("/dev/disk/by-path/ip-%s-iscsi-%s-lun-%s" %