diff --git a/IPython/core/magics/osm.py b/IPython/core/magics/osm.py
index 00a999a..ccb2105 100644
--- a/IPython/core/magics/osm.py
+++ b/IPython/core/magics/osm.py
@@ -663,8 +663,7 @@ class OSMagics(Magics):
         elif 'r' in opts:
             bkms = {}
         elif 'l' in opts:
-            bks = bkms.keys()
-            bks.sort()
+            bks = sorted(bkms)
             if bks:
                 size = max(map(len, bks))
             else:
diff --git a/IPython/core/tests/test_magic.py b/IPython/core/tests/test_magic.py
index f15c818..3e583ad 100644
--- a/IPython/core/tests/test_magic.py
+++ b/IPython/core/tests/test_magic.py
@@ -942,3 +942,10 @@ def test_edit_cell():
     
     # test
     _run_edit_test("1", exp_contents=ip.user_ns['In'][1], exp_is_temp=True)
+
+def test_bookmark():
+    ip = get_ipython()
+    ip.run_line_magic('bookmark', 'bmname')
+    with tt.AssertPrints('bmname'):
+        ip.run_line_magic('bookmark', '-l')
+    ip.run_line_magic('bookmark', '-d bmname')