diff --git a/scripts/wan2.2/train.py b/scripts/wan2.2/train.py
index 011b4d3..d8acc9d 100644
--- a/scripts/wan2.2/train.py
+++ b/scripts/wan2.2/train.py
@@ -1480,10 +1480,10 @@ def main():
         vae_stream_2 = None
 
     boundary = config['transformer_additional_kwargs'].get('boundary', 0.900)
-    if args.boundary_type == "low":
+    if args.boundary_type == "high":
         start_num_idx = 0
         train_sampling_steps = int(args.train_sampling_steps * boundary)
-    elif args.boundary_type == "high":
+    elif args.boundary_type == "low":
         start_num_idx = int(args.train_sampling_steps * boundary)
         train_sampling_steps = args.train_sampling_steps - int(args.train_sampling_steps * boundary)
     else:
diff --git a/scripts/wan2.2/train_lora.py b/scripts/wan2.2/train_lora.py
index 7235d2f..fb80a61 100755
--- a/scripts/wan2.2/train_lora.py
+++ b/scripts/wan2.2/train_lora.py
@@ -1488,10 +1488,10 @@ def main():
         vae_stream_2 = None
 
     boundary = config['transformer_additional_kwargs'].get('boundary', 0.900)
-    if args.boundary_type == "low":
+    if args.boundary_type == "high":
         start_num_idx = 0
         train_sampling_steps = int(args.train_sampling_steps * boundary)
-    elif args.boundary_type == "high":
+    elif args.boundary_type == "low":
         start_num_idx = int(args.train_sampling_steps * boundary)
         train_sampling_steps = args.train_sampling_steps - int(args.train_sampling_steps * boundary)
     else: