diff --git a/test/test_softmax_fusion.py b/test/test_softmax_fusion.py
index 6e05445dba..729c02a473 100644
--- a/test/test_softmax_fusion.py
+++ b/test/test_softmax_fusion.py
@@ -111,6 +111,13 @@ class TestFuse(unittest.TestCase):
     with Context(NOOPT=1):
       self._test_fuse(Tensor.scaled_dot_product_attention, q, k, v, atol=1e-5)
 
+  @unittest.expectedFailure
+  def test_mismatch_reduce(self):
+    a = Tensor.ones(16, 10).contiguous().realize()
+    b = Tensor.ones(16, 20).contiguous().realize()
+    c = (a.sum(axis=1) + b.sum(axis=1)).fuse()
+    self.assertListEqual(c.tolist(), [30]*16)
+
 class TestSoftmaxFusion(unittest.TestCase):
   @classmethod
   def setUpClass(cls):
diff --git a/tinygrad/engine/realize.py b/tinygrad/engine/realize.py
index 388f7d33e8..c3e091695b 100644
--- a/tinygrad/engine/realize.py
+++ b/tinygrad/engine/realize.py
@@ -39,7 +39,7 @@ def get_program(ast:UOp, renderer:Renderer) -> ProgramSpec:
   if DEBUG >= 6: print_uops(uops)
   src = renderer.render(uops)
 
-  return ProgramSpec(uops[-1].arg.name, src, renderer.device, ast, uops,
+  return ProgramSpec(uops[-1].arg.name if uops[-1].arg is not None else "test", src, renderer.device, ast, uops,
                      global_size=[1,1,1] if renderer.has_local else None, local_size=[1,1,1] if renderer.has_local else None)
 
 # **************** Runners ****************