diff --git a/tests/vocoder_tests/test_fullband_melgan_train.py b/tests/vocoder_tests/test_fullband_melgan_train.py
index 6e533eb9..fbce03eb 100644
--- a/tests/vocoder_tests/test_fullband_melgan_train.py
+++ b/tests/vocoder_tests/test_fullband_melgan_train.py
@@ -22,7 +22,7 @@ config = FullbandMelganConfig(
     print_eval=True,
     discriminator_model_params={"base_channels": 16, "max_channels": 256, "downsample_factors": [4, 4, 4]},
     data_path="tests/data/ljspeech",
-    discriminator_model_params={"base_channels": 16, "max_channels": 128, "downsample_factors": [4, 4, 4]},
+    discriminator_model_params={"base_channels": 16, "max_channels": 64, "downsample_factors": [4, 4, 4]},
     output_path=output_path,
 )
 config.audio.do_trim_silence = True