diff --git a/python/pyspark/ml/feature.py b/python/pyspark/ml/feature.py
index 22081233b04d5fa9dc41a45c2e68077cf54dc71d..d017a231886cbb6635daf9edefa0a4399c85467d 100644
--- a/python/pyspark/ml/feature.py
+++ b/python/pyspark/ml/feature.py
@@ -1323,7 +1323,7 @@ class StringIndexer(JavaEstimator, HasInputCol, HasOutputCol, HasHandleInvalid):
     >>> sorted(set([(i[0], i[1]) for i in td.select(td.id, td.indexed).collect()]),
     ...     key=lambda x: x[0])
     [(0, 0.0), (1, 2.0), (2, 1.0), (3, 0.0), (4, 0.0), (5, 1.0)]
-    >>> inverter = IndexToString(inputCol="indexed", outputCol="label2", labels=model.labels())
+    >>> inverter = IndexToString(inputCol="indexed", outputCol="label2", labels=model.labels)
     >>> itd = inverter.transform(td)
     >>> sorted(set([(i[0], str(i[1])) for i in itd.select(itd.id, itd.label2).collect()]),
     ...     key=lambda x: x[0])
@@ -1365,13 +1365,14 @@ class StringIndexerModel(JavaModel):
 
     .. versionadded:: 1.4.0
     """
+
     @property
     @since("1.5.0")
     def labels(self):
         """
         Ordered list of labels, corresponding to indices to be assigned.
         """
-        return self._java_obj.labels
+        return self._call_java("labels")
 
 
 @inherit_doc