diff --git a/toolbox/__init__.py b/toolbox/__init__.py
index ee96ef3..431ed78 100644
--- a/toolbox/__init__.py
+++ b/toolbox/__init__.py
@@ -453,7 +453,8 @@ class Toolbox:
             model_config_fpaths = list(model_fpath.parent.rglob("*.json"))
             if self.vc_mode and self.ui.current_extractor_fpath is None:
                 return
-            model_config_fpath = model_config_fpaths[0]
+            if len(model_config_fpaths) > 0:
+                model_config_fpath = model_config_fpaths[0]
         else:
             vocoder = rnn_vocoder
             self.ui.log("set wavernn as vocoder")
diff --git a/vocoder/hifigan/inference.py b/vocoder/hifigan/inference.py
index 1475146..ffbe83d 100644
--- a/vocoder/hifigan/inference.py
+++ b/vocoder/hifigan/inference.py
@@ -19,7 +19,7 @@ def load_checkpoint(filepath, device):
     return checkpoint_dict
 
 
-def load_model(weights_fpath, config_fpath="./vocoder/saved_models/24k/config.json", verbose=True):
+def load_model(weights_fpath, config_fpath="./vocoder/hifigan/config_16k.json", verbose=True):
     global generator, _device, output_sample_rate
 
     if verbose: