diff --git a/apply_factor.py b/apply_factor.py
index d60a7e5b..9bf7f0ed 100755
--- a/apply_factor.py
+++ b/apply_factor.py
@@ -67,7 +67,8 @@
 
     trunc = g.mean_latent(4096)
 
-    torch.manual_seed(torch_seed)
+    if torch_seed > 0:
+        torch.manual_seed(torch_seed)
     latent = torch.randn(args.n_sample, 512, device=args.device)
     latent = g.get_latent(latent)