diff --git a/bridge.py b/bridge.py
index c838dd7..30a1e06 100644
--- a/bridge.py
+++ b/bridge.py
@@ -85,10 +85,10 @@ class LightX2VDefaultConfig:
 
     DEFAULT_ATTENTION_TYPE = "flash_attn3"
     DEFAULT_QUANTIZATION_SCHEMES = {
-        "dit": "bf16",
-        "t5": "bf16",
-        "clip": "fp16",
-        "adapter": "bf16",
+        "dit": "Default",
+        "t5": "Default",
+        "clip": "Default",
+        "adapter": "Default",
     }
     DEFAULT_VIDEO_PARAMS = {
         "height": 480,
@@ -385,13 +385,13 @@ class ModularConfigManager:
 
         updates.update(
             {
-                "clip_quantized": clip_scheme != "none",
+                "clip_quantized": clip_scheme != "Default",
                 "clip_quant_scheme": clip_scheme,
-                "t5_quantized": t5_scheme != "none",
+                "t5_quantized": t5_scheme != "Default",
                 "t5_quant_scheme": t5_scheme,
-                "dit_quantized": dit_scheme != "none",
+                "dit_quantized": dit_scheme != "Default",
                 "dit_quant_scheme": dit_scheme,
-                "adapter_quantized": adapter_scheme != "none",
+                "adapter_quantized": adapter_scheme != "Default",
                 "adapter_quant_scheme": adapter_scheme,
             }
         )
diff --git a/data_models.py b/data_models.py
index 6bfa767..072b85b 100644
--- a/data_models.py
+++ b/data_models.py
@@ -95,10 +95,10 @@ class TeaCacheConfig:
 class QuantizationConfig:
     """Quantization configuration."""
 
-    dit_quant_scheme: str = "fp8-sgl"
-    t5_quant_scheme: str = "fp8-sgl"
-    clip_quant_scheme: str = "fp8-sgl"
-    adapter_quant_scheme: str = "fp8-sgl"
+    dit_quant_scheme: str = "Default"
+    t5_quant_scheme: str = "Default"
+    clip_quant_scheme: str = "Default"
+    adapter_quant_scheme: str = "Default"
 
     def to_dict(self) -> Dict[str, Any]:
         return {
diff --git a/nodes.py b/nodes.py
index de1751c..5bb4061 100644
--- a/nodes.py
+++ b/nodes.py
@@ -305,7 +305,7 @@ class LightX2VQuantization:
                 quant_backends.append(op_name)
 
         common_schema = ["fp8", "int8"]
-        supported_quant_schemes = ["none"]
+        supported_quant_schemes = ["Default"]
         for schema in common_schema:
             for backend in quant_backends:
                 supported_quant_schemes.append(f"{schema}-{backend}")
@@ -329,7 +329,7 @@ class LightX2VQuantization:
                 "clip_quant_scheme": (
                     supported_quant_schemes,
                     {
-                        "default": supported_quant_schemes[1],
+                        "default": supported_quant_schemes[0],
                         "tooltip": "CLIP encoder quantization precision",
                     },
                 ),