diff --git a/pymongo/collection.py b/pymongo/collection.py
index e3cc4c786..d03bb3d08 100644
--- a/pymongo/collection.py
+++ b/pymongo/collection.py
@@ -1250,7 +1250,7 @@ class Collection(common.BaseObject):
           using the option will fail if a duplicate value is detected.
 
         .. note:: `expireAfterSeconds` requires server version **>= 2.2**
-        .. note:: `partialFilterIndexes` requires server version **>= 3.2**
+        .. note:: `partialFilterExpression` requires server version **>= 3.2**
 
         :Parameters:
           - `keys`: a single key or a list of (key, direction)
diff --git a/pymongo/operations.py b/pymongo/operations.py
index e9116bb6c..820618d64 100644
--- a/pymongo/operations.py
+++ b/pymongo/operations.py
@@ -228,7 +228,7 @@ class IndexModel(object):
         See the MongoDB documentation for a full list of supported options by
         server version.
 
-        .. note:: `partialFilterIndexes` requires server version **>= 3.2**
+        .. note:: `partialFilterExpression` requires server version **>= 3.2**
 
         :Parameters:
           - `keys`: a single key or a list of (key, direction)