diff --git a/sahara/plugins/cdh/client/types.py b/sahara/plugins/cdh/client/types.py
index 0d407a42..75428350 100644
--- a/sahara/plugins/cdh/client/types.py
+++ b/sahara/plugins/cdh/client/types.py
@@ -437,7 +437,7 @@ class ApiList(BaseApiObject):
     def __getitem__(self, i):
         return self.objects.__getitem__(i)
 
-    def __getslice(self, i, j):
+    def __getslice__(self, i, j):
         return self.objects.__getslice__(i, j)
 
     @classmethod