diff --git a/test/test_speed_v_torch.py b/test/test_speed_v_torch.py
index a43f08d9b7..d0ed90a648 100644
--- a/test/test_speed_v_torch.py
+++ b/test/test_speed_v_torch.py
@@ -85,14 +85,6 @@ class TestSpeed(unittest.TestCase):
     def f(a, b): return a-b
     helper_test_generic_square('sub', 4096, f, f)
 
-  def test_constant_sub(self):
-    def f(a, b): return 1.0-a
-    helper_test_generic_square('sub', 4096, f, f)
-
-  def test_constant_zero_sub(self):
-    def f(a, b): return 0.0-a
-    helper_test_generic_square('sub', 4096, f, f)
-
   def test_pow(self):
     def f(a, b): return a.pow(b)
     helper_test_generic_square('pow', 2048, f, f)
@@ -151,6 +143,14 @@ class TestSpeed(unittest.TestCase):
       def f(a, b): return a + b
       helper_test_generic_square('add', N, f, f)
 
+  def test_add_constant(self):
+    def f(a, b): return a+2.0
+    helper_test_generic_square('add_constant', 4096, f, f)
+
+  def test_add_constant_zero(self):
+    def f(a, b): return a+0.0
+    helper_test_generic_square('add_constant_zero', 4096, f, f)
+
   def test_add_sq(self):
     def f(a, b): return a*a + b*b
     helper_test_generic_square('add_sq', 4096, f, f)