diff --git a/tests/test_token.py b/tests/test_token.py
index 3961204..9a45bcd 100644
--- a/tests/test_token.py
+++ b/tests/test_token.py
@@ -82,6 +82,15 @@ def test_adjust_privilege(newtok):
     assert newtok.privileges[PRIVILEGE_NAME] & gdef.SE_PRIVILEGE_ENABLED
 
 
+def test_token_privilege_dict(newtok):
+    PRIVILEGE_NAME = b"SeShutdownPrivilege"
+    privdict = newtok.privileges
+    # These API use Token._lookup_name() that are not tested by other means
+    assert privdict.keys()
+    assert privdict.items()
+    assert PRIVILEGE_NAME in privdict.keys() # Implement contains ?
+
+
 def test_token_groups(curtok):
     groups = curtok.groups
     groups_size = groups.GroupCount
diff --git a/windows/winobject/token.py b/windows/winobject/token.py
index 18e2ac3..091a1ce 100644
--- a/windows/winobject/token.py
+++ b/windows/winobject/token.py
@@ -114,7 +114,7 @@ class TokenPrivileges(gdef.TOKEN_PRIVILEGES):
 
     def _lookup_name(self, luid):
         size = gdef.DWORD(0x100)
-        buff = ctypes.c_buffer(size.value)
+        buff = ctypes.create_unicode_buffer(size.value)
         winproxy.LookupPrivilegeNameW(None, luid, buff, size)
         return buff[:size.value]