diff --git a/tests/base.py b/tests/base.py
index 855ec96..b12e825 100644
--- a/tests/base.py
+++ b/tests/base.py
@@ -107,7 +107,7 @@ class PyexcelMultipleSheetBase:
         for s in b:
             data = pyexcel.utils.to_array(s)
             assert self.content[s.name] == data
-        si = pyexcel.sheets.iterators.SheetIterator(b)
+        si = pyexcel.iterators.SheetIterator(b)
         for s in si:
             data = pyexcel.utils.to_array(s)
             assert self.content[s.name] == data
diff --git a/tests/test_filter.py b/tests/test_filter.py
index 8c6c569..2d760b2 100644
--- a/tests/test_filter.py
+++ b/tests/test_filter.py
@@ -6,7 +6,7 @@ from nose.tools import eq_
 
 class TestFilter:
     def setUp(self):
-        self.test_file = "test_filter.xlsx"
+        self.test_file = "test_filter.xls"
         sample = [
             [1, 21, 31],
             [2, 22, 32],