diff --git a/heat/engine/resources/openstack/cinder/volume.py b/heat/engine/resources/openstack/cinder/volume.py
index 14ff244751..ef41355824 100644
--- a/heat/engine/resources/openstack/cinder/volume.py
+++ b/heat/engine/resources/openstack/cinder/volume.py
@@ -368,9 +368,7 @@ class CinderVolume(vb.BaseVolume, sh.SchedulerHintsMixin):
 
     def _ready_to_extend_volume(self):
         vol = self.client().volumes.get(self.resource_id)
-        expected_status = (
-            'available', 'in-use') if vol.multiattach else ('available',)
-
+        expected_status = ('available',)
         if vol.status in expected_status:
             LOG.debug("Volume %s is ready to extend.", vol.id)
             return True
@@ -382,7 +380,8 @@ class CinderVolume(vb.BaseVolume, sh.SchedulerHintsMixin):
             LOG.debug("Volume %s is being extended", vol.id)
             return False
 
-        if vol.status != 'available':
+        expected_status = ('available',)
+        if vol.status not in expected_status:
             LOG.info("Resize failed: Volume %(vol)s "
                      "is in %(status)s state.",
                      {'vol': vol.id, 'status': vol.status})
diff --git a/heat/tests/openstack/cinder/test_volume.py b/heat/tests/openstack/cinder/test_volume.py
index a137b226a2..3d658e86c7 100644
--- a/heat/tests/openstack/cinder/test_volume.py
+++ b/heat/tests/openstack/cinder/test_volume.py
@@ -1388,10 +1388,7 @@ class CinderVolumeTest(vt_base.VolumeTestCase):
                                  extra_get_mocks=[
                                      vt_base.FakeVolume('extending'),
                                      vt_base.FakeVolume('reserved'),
-                                     vt_base.FakeVolume('in-use',
-                                                        multiattach=True),
-                                     vt_base.FakeVolume('in-use',
-                                                        multiattach=False),
+                                     vt_base.FakeVolume('in-use'),
                                      vt_base.FakeVolume('available')])
 
         stack = utils.parse_stack(self.t, stack_name=self.stack_name)
@@ -1401,7 +1398,6 @@ class CinderVolumeTest(vt_base.VolumeTestCase):
 
         self.assertEqual(False, rsrc._ready_to_extend_volume())
         self.assertEqual(False, rsrc._ready_to_extend_volume())
-        self.assertEqual(True, rsrc._ready_to_extend_volume())
         self.assertEqual(False, rsrc._ready_to_extend_volume())
         self.assertEqual(True, rsrc._ready_to_extend_volume())