diff --git a/pymongo/cluster_description.py b/pymongo/cluster_description.py
index 94ce3ff8d..d7a65ef14 100644
--- a/pymongo/cluster_description.py
+++ b/pymongo/cluster_description.py
@@ -17,8 +17,9 @@
 from collections import namedtuple
 
 from pymongo import common
+from pymongo.server_type import SERVER_TYPE
 from pymongo.errors import ConfigurationError
-from pymongo.server_description import ServerDescription, SERVER_TYPE
+from pymongo.server_description import ServerDescription
 
 
 CLUSTER_TYPE = namedtuple('ClusterType', ['Single', 'ReplicaSetNoPrimary',
diff --git a/pymongo/ismaster.py b/pymongo/ismaster.py
index db67ed6c8..07e2a4084 100644
--- a/pymongo/ismaster.py
+++ b/pymongo/ismaster.py
@@ -15,16 +15,10 @@
 """Parse a response to the 'ismaster' command."""
 
 import itertools
-from collections import namedtuple
 
 from bson.py3compat import imap
 from pymongo import common
-
-
-SERVER_TYPE = namedtuple('ServerType',
-                         ['Unknown', 'Mongos', 'RSPrimary', 'RSSecondary',
-                          'RSArbiter', 'RSOther', 'RSGhost',
-                          'Standalone'])(*range(8))
+from pymongo.server_type import SERVER_TYPE
 
 
 def _get_server_type(doc):
diff --git a/pymongo/monitor.py b/pymongo/monitor.py
index daf95a2cf..8e6081723 100644
--- a/pymongo/monitor.py
+++ b/pymongo/monitor.py
@@ -21,7 +21,8 @@ import time
 import weakref
 
 from pymongo import common, helpers, message, thread_util
-from pymongo.ismaster import IsMaster, SERVER_TYPE
+from pymongo.server_type import SERVER_TYPE
+from pymongo.ismaster import IsMaster
 from pymongo.read_preferences import MovingAverage
 from pymongo.server_description import ServerDescription
 
diff --git a/pymongo/server.py b/pymongo/server.py
index b70849859..b238875a5 100644
--- a/pymongo/server.py
+++ b/pymongo/server.py
@@ -14,7 +14,7 @@
 
 """Communicate with one MongoDB server in a cluster."""
 
-from pymongo.ismaster import SERVER_TYPE
+from pymongo.server_type import SERVER_TYPE
 from pymongo.response import Response, ExhaustResponse
 
 
diff --git a/pymongo/server_description.py b/pymongo/server_description.py
index b24126e5c..6531c5d04 100644
--- a/pymongo/server_description.py
+++ b/pymongo/server_description.py
@@ -14,7 +14,8 @@
 
 """Represent one server in the cluster."""
 
-from pymongo.ismaster import IsMaster, SERVER_TYPE
+from pymongo.server_type import SERVER_TYPE
+from pymongo.ismaster import IsMaster
 
 
 class ServerDescription(object):
diff --git a/pymongo/server_selectors.py b/pymongo/server_selectors.py
index b3d7ee5e8..edf4f89eb 100644
--- a/pymongo/server_selectors.py
+++ b/pymongo/server_selectors.py
@@ -14,7 +14,7 @@
 
 """Criteria to select some ServerDescriptions out of a list."""
 
-from pymongo.ismaster import SERVER_TYPE
+from pymongo.server_type import SERVER_TYPE
 
 
 def any_server_selector(server_descriptions):
diff --git a/pymongo/server_type.py b/pymongo/server_type.py
new file mode 100644
index 000000000..13b2f2da6
--- /dev/null
+++ b/pymongo/server_type.py
@@ -0,0 +1,23 @@
+# Copyright 2014 MongoDB, Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Type codes for MongoDB servers."""
+
+from collections import namedtuple
+
+
+SERVER_TYPE = namedtuple('ServerType',
+                         ['Unknown', 'Mongos', 'RSPrimary', 'RSSecondary',
+                          'RSArbiter', 'RSOther', 'RSGhost',
+                          'Standalone'])(*range(8))
diff --git a/test/test_cluster.py b/test/test_cluster.py
index e29f236ec..6b933cd40 100644
--- a/test/test_cluster.py
+++ b/test/test_cluster.py
@@ -23,6 +23,7 @@ import threading
 
 from bson.py3compat import imap
 from pymongo import common
+from pymongo.server_type import SERVER_TYPE
 from pymongo.cluster import Cluster
 from pymongo.cluster_description import CLUSTER_TYPE
 from pymongo.errors import (ConfigurationError,
@@ -31,7 +32,7 @@ from pymongo.errors import (ConfigurationError,
 from pymongo.ismaster import IsMaster
 from pymongo.monitor import Monitor
 from pymongo.read_preferences import MovingAverage
-from pymongo.server_description import ServerDescription, SERVER_TYPE
+from pymongo.server_description import ServerDescription
 from pymongo.server_selectors import (any_server_selector,
                                       writable_server_selector)
 from pymongo.settings import ClusterSettings
diff --git a/test/test_server_description.py b/test/test_server_description.py
index 1253a5af4..fdc66bb5c 100644
--- a/test/test_server_description.py
+++ b/test/test_server_description.py
@@ -18,9 +18,10 @@ import sys
 
 sys.path[0:0] = [""]
 
+from pymongo.server_type import SERVER_TYPE
 from pymongo.ismaster import IsMaster
 from pymongo.read_preferences import MovingAverage
-from pymongo.server_description import ServerDescription, SERVER_TYPE
+from pymongo.server_description import ServerDescription
 from test import unittest
 
 address = ('localhost', 27017)