diff --git a/funasr/auto/auto_model.py b/funasr/auto/auto_model.py
index f724650f3..5f89dd671 100644
--- a/funasr/auto/auto_model.py
+++ b/funasr/auto/auto_model.py
@@ -146,7 +146,7 @@ class AutoModel:
         set_all_random_seed(kwargs.get("seed", 0))
         
         device = kwargs.get("device", "cuda")
-        if not torch.cuda.is_available() or kwargs.get("ngpu", 0):
+        if not torch.cuda.is_available() or kwargs.get("ngpu", 0) == 0:
             device = "cpu"
             kwargs["batch_size"] = 1
         kwargs["device"] = device