diff --git a/novaclient/tests/test_utils.py b/novaclient/tests/test_utils.py
index 8809133ac..0fff7ea55 100644
--- a/novaclient/tests/test_utils.py
+++ b/novaclient/tests/test_utils.py
@@ -163,3 +163,23 @@ class PrintResultTestCase(test_utils.TestCase):
                          '| k3   | 3     |\n'
                          '| k2   | 2     |\n'
                          '+------+-------+\n')
+
+    def test_pretty_choice_list(self):
+        l = []
+        r = utils.pretty_choice_list(l)
+        self.assertEqual(r, "")
+
+        l = ["v1", "v2", "v3"]
+        r = utils.pretty_choice_list(l)
+        self.assertEqual(r, "'v1', 'v2', 'v3'")
+
+    def test_pretty_choice_dict(self):
+        d = {}
+        r = utils.pretty_choice_dict(d)
+        self.assertEqual(r, "")
+
+        d = {"k1": "v1",
+             "k2": "v2",
+             "k3": "v3"}
+        r = utils.pretty_choice_dict(d)
+        self.assertEqual(r, "'k1=v1', 'k2=v2', 'k3=v3'")
diff --git a/novaclient/utils.py b/novaclient/utils.py
index 2020a56f3..cb96992f7 100644
--- a/novaclient/utils.py
+++ b/novaclient/utils.py
@@ -143,6 +143,11 @@ def pretty_choice_list(l):
     return ', '.join("'%s'" % i for i in l)
 
 
+def pretty_choice_dict(d):
+    """Returns a formatted dict as 'key=value'."""
+    return pretty_choice_list(['%s=%s' % (k, d[k]) for k in sorted(d.keys())])
+
+
 def print_list(objs, fields, formatters={}, sortby_index=None):
     if sortby_index is None:
         sortby = None
diff --git a/novaclient/v1_1/shell.py b/novaclient/v1_1/shell.py
index 998d681b5..a50c045c2 100644
--- a/novaclient/v1_1/shell.py
+++ b/novaclient/v1_1/shell.py
@@ -2687,7 +2687,17 @@ def do_aggregate_details(cs, args):
 
 def _print_aggregate_details(aggregate):
     columns = ['Id', 'Name', 'Availability Zone', 'Hosts', 'Metadata']
-    utils.print_list([aggregate], columns)
+
+    parser_metadata = lambda o: utils.pretty_choice_dict(
+        getattr(o, 'metadata', {}) or {})
+    parser_hosts = lambda o: utils.pretty_choice_list(
+        getattr(o, 'hosts', []))
+
+    formatters = {
+        'Metadata': parser_metadata,
+        'Hosts': parser_hosts,
+    }
+    utils.print_list([aggregate], columns, formatters=formatters)
 
 
 @utils.arg('server', metavar='<server>', help='Name or ID of server.')
diff --git a/novaclient/v3/shell.py b/novaclient/v3/shell.py
index 3044e6d9f..55724c2bb 100644
--- a/novaclient/v3/shell.py
+++ b/novaclient/v3/shell.py
@@ -2517,7 +2517,16 @@ def do_aggregate_details(cs, args):
 
 def _print_aggregate_details(aggregate):
     columns = ['Id', 'Name', 'Availability Zone', 'Hosts', 'Metadata']
-    utils.print_list([aggregate], columns)
+    parser_metadata = lambda o: utils.pretty_choice_dict(
+        getattr(o, 'metadata', {}) or {})
+    parser_hosts = lambda o: utils.pretty_choice_list(
+        getattr(o, 'hosts', []))
+
+    formatters = {
+        'Metadata': parser_metadata,
+        'Hosts': parser_hosts,
+    }
+    utils.print_list([aggregate], columns, formatters=formatters)
 
 
 @utils.arg('server', metavar='<server>', help='Name or ID of server.')