diff --git a/tests/test_defects.py b/tests/test_defects.py
index 5c5e2fc3..ea58bc78 100644
--- a/tests/test_defects.py
+++ b/tests/test_defects.py
@@ -888,7 +888,7 @@ def test_edgeMasking(self):
         testImage = self.flatExp.clone()
         mi = testImage.maskedImage
 
-        self.assertEqual(countMaskedPixels(mi, 'EDGE'), 0)
+        self.assertEqual(ipIsr.countMaskedPixels(mi, 'EDGE'), 0)
         self.defaultTask._setEdgeBits(mi)
 
         hEdge = self.defaultConfig.nPixBorderLeftRight
@@ -897,7 +897,7 @@ def test_edgeMasking(self):
 
         nEdge = xSize*vEdge*2 + ySize*hEdge*2 - hEdge*vEdge*4
 
-        self.assertEqual(countMaskedPixels(mi, 'EDGE'), nEdge)
+        self.assertEqual(ipIsr.countMaskedPixels(mi, 'EDGE'), nEdge)
 
     def test_badImage(self):
         """Check that fully-bad images do not fail.
diff --git a/tests/test_deferredCharge.py b/tests/test_deferredCharge.py
index 3e8f5551..08a1e374 100644
--- a/tests/test_deferredCharge.py
+++ b/tests/test_deferredCharge.py
@@ -28,7 +28,7 @@
 import lsst.utils.tests
 
 import lsst.cp.pipe as cpPipe
-from lsst.ip.isr import IsrMock
+from lsst.ip.isr.isrMock import IsrMock
 
 
 class CpCtiSolveTaskTestCase(lsst.utils.tests.TestCase):