diff --git a/python/pyspark/mllib/random.py b/python/pyspark/mllib/random.py
index 3e59c73db85e..d53c95fd59c2 100644
--- a/python/pyspark/mllib/random.py
+++ b/python/pyspark/mllib/random.py
@@ -28,7 +28,7 @@
 __all__ = ['RandomRDDs', ]
 
 
-class RandomRDDs:
+class RandomRDDs(object):
     """
     Generator methods for creating RDDs comprised of i.i.d samples from
     some distribution.
diff --git a/python/pyspark/mllib/util.py b/python/pyspark/mllib/util.py
index 4962d05491c0..1c7b8c809ab5 100644
--- a/python/pyspark/mllib/util.py
+++ b/python/pyspark/mllib/util.py
@@ -25,7 +25,7 @@
 from pyspark.serializers import NoOpSerializer
 
 
-class MLUtils:
+class MLUtils(object):
 
     """
     Helper methods to load, save and pre-process data used in MLlib.
diff --git a/python/pyspark/sql.py b/python/pyspark/sql.py
index aaa35dadc203..511aeba65f1a 100644
--- a/python/pyspark/sql.py
+++ b/python/pyspark/sql.py
@@ -898,7 +898,7 @@ def __reduce__(self):
     return Row
 
 
-class SQLContext:
+class SQLContext(object):
 
     """Main entry point for SparkSQL functionality.
 
diff --git a/python/pyspark/storagelevel.py b/python/pyspark/storagelevel.py
index 2aa0fb9d2c1e..676aa0f7144a 100644
--- a/python/pyspark/storagelevel.py
+++ b/python/pyspark/storagelevel.py
@@ -18,7 +18,7 @@
 __all__ = ["StorageLevel"]
 
 
-class StorageLevel:
+class StorageLevel(object):
 
     """
     Flags for controlling the storage of an RDD. Each StorageLevel records whether to use memory,