diff --git a/openstackclient/image/v2/cache.py b/openstackclient/image/v2/cache.py
index ebb4e5b206..bf27b5e63d 100644
--- a/openstackclient/image/v2/cache.py
+++ b/openstackclient/image/v2/cache.py
@@ -194,6 +194,7 @@ class ClearCachedImage(command.Command):
             "--cache",
             action="store_const",
             const="cache",
+            default="both",
             dest="target",
             help=_("Clears all the cached images"),
         )
@@ -201,6 +202,7 @@ class ClearCachedImage(command.Command):
             "--queue",
             action="store_const",
             const="queue",
+            default="both",
             dest="target",
             help=_("Clears all the queued images"),
         )
diff --git a/openstackclient/tests/unit/image/v2/test_cache.py b/openstackclient/tests/unit/image/v2/test_cache.py
index abb0b37327..3624d7867b 100644
--- a/openstackclient/tests/unit/image/v2/test_cache.py
+++ b/openstackclient/tests/unit/image/v2/test_cache.py
@@ -184,13 +184,13 @@ class TestCacheClear(fakes.TestImagev2):
     def test_cache_clear_no_option(self):
         arglist = []
 
-        verifylist = [('target', None)]
+        verifylist = [('target', 'both')]
 
         parsed_args = self.check_parser(self.cmd, arglist, verifylist)
         self.cmd.take_action(parsed_args)
 
         self.assertIsNone(
-            self.image_client.clear_cache.assert_called_with(None)
+            self.image_client.clear_cache.assert_called_with('both')
         )
 
     def test_cache_clear_queue_option(self):