diff --git a/tests/expected_output/test_envelope.raw b/tests/expected_output/test_envelope.raw
index 59c0e67..18286dc 100644
Binary files a/tests/expected_output/test_envelope.raw and b/tests/expected_output/test_envelope.raw differ
diff --git a/tests/expected_output/test_envelope_16bit.raw b/tests/expected_output/test_envelope_16bit.raw
index 67a0237..f00763e 100644
Binary files a/tests/expected_output/test_envelope_16bit.raw and b/tests/expected_output/test_envelope_16bit.raw differ
diff --git a/tests/test_envelope.yml b/tests/test_envelope.yml
index 2040fde..95a385c 100644
--- a/tests/test_envelope.yml
+++ b/tests/test_envelope.yml
@@ -11,7 +11,7 @@ patch:
     - numvoices: 1
       units:
         - type: envelope
-          parameters: {attack: 64, decay: 64, gain: 128, release: 80, stereo: 0, sustain: 64}
+          parameters: {attack: 64, decay: 64, gain: 64, release: 80, stereo: 0, sustain: 64}
         - type: envelope
           parameters: {attack: 95, decay: 64, gain: 128, release: 80, stereo: 0, sustain: 64}
         - type: out