diff --git a/runtime/Python3/tests/TestIntervalSet.py b/runtime/Python3/tests/TestIntervalSet.py
index 6428c0d47c..1bd0ebe8c4 100644
--- a/runtime/Python3/tests/TestIntervalSet.py
+++ b/runtime/Python3/tests/TestIntervalSet.py
@@ -34,7 +34,7 @@ def testDistinct1(self):
         s = IntervalSet()
         s.addRange(range(30,32))
         s.addRange(range(40,42))
-        self.assertEquals(2,len(s.intervals))
+        self.assertEqual(2,len(s.intervals))
         self.assertTrue(30 in s)
         self.assertTrue(40 in s)
         self.assertFalse(35 in s)
@@ -43,7 +43,7 @@ def testDistinct2(self):
         s = IntervalSet()
         s.addRange(range(40,42))
         s.addRange(range(30,32))
-        self.assertEquals(2,len(s.intervals))
+        self.assertEqual(2,len(s.intervals))
         self.assertTrue(30 in s)
         self.assertTrue(40 in s)
         self.assertFalse(35 in s)
@@ -52,7 +52,7 @@ def testContiguous1(self):
         s = IntervalSet()
         s.addRange(range(30,36))
         s.addRange(range(36,41))
-        self.assertEquals(1,len(s.intervals))
+        self.assertEqual(1,len(s.intervals))
         self.assertTrue(30 in s)
         self.assertTrue(40 in s)
         self.assertTrue(35 in s)
@@ -61,7 +61,7 @@ def testContiguous2(self):
         s = IntervalSet()
         s.addRange(range(36,41))
         s.addRange(range(30,36))
-        self.assertEquals(1,len(s.intervals))
+        self.assertEqual(1,len(s.intervals))
         self.assertTrue(30 in s)
         self.assertTrue(40 in s)
 
@@ -69,7 +69,7 @@ def testOverlapping1(self):
         s = IntervalSet()
         s.addRange(range(30,40))
         s.addRange(range(35,45))
-        self.assertEquals(1,len(s.intervals))
+        self.assertEqual(1,len(s.intervals))
         self.assertTrue(30 in s)
         self.assertTrue(44 in s)
 
@@ -77,7 +77,7 @@ def testOverlapping2(self):
         s = IntervalSet()
         s.addRange(range(35,45))
         s.addRange(range(30,40))
-        self.assertEquals(1,len(s.intervals))
+        self.assertEqual(1,len(s.intervals))
         self.assertTrue(30 in s)
         self.assertTrue(44 in s)
 
@@ -87,7 +87,7 @@ def testOverlapping3(self):
         s.addRange(range(40,42))
         s.addRange(range(50,52))
         s.addRange(range(20,61))
-        self.assertEquals(1,len(s.intervals))
+        self.assertEqual(1,len(s.intervals))
         self.assertTrue(20 in s)
         self.assertTrue(60 in s)