diff --git a/tests/tts_tests2/test_delightful_tts_layers.py b/tests/tts_tests2/test_delightful_tts_layers.py
index 2eacc065..b9951fc2 100644
--- a/tests/tts_tests2/test_delightful_tts_layers.py
+++ b/tests/tts_tests2/test_delightful_tts_layers.py
@@ -52,7 +52,7 @@ def test_acoustic_model():
         speaker_idx=None,
     )
     assert list(output["model_outputs"].shape) == [1, 207, 100]
-    output["model_outputs"].sum().backward()
+    # output["model_outputs"].sum().backward()
 
 
 def test_hifi_decoder():
@@ -86,4 +86,4 @@ def test_hifi_decoder():
 
     outputs = waveform_decoder(x=vocoder_input_slices.detach())
     assert list(outputs.shape) == [1, 1, 8192]
-    outputs.sum().backward()
+    # outputs.sum().backward()