diff --git a/python_module/megengine/module/module.py b/python_module/megengine/module/module.py
index 10548825..d91fa94e 100644
--- a/python_module/megengine/module/module.py
+++ b/python_module/megengine/module/module.py
@@ -318,6 +318,7 @@ class Module(metaclass=ABCMeta):
         Set ``module``'s ``quantize_diabled`` attribute and return ``module``.
         Could be used as a decorator.
         """
+
         def fn(module: Module) -> None:
             module.quantize_diabled = value
 
diff --git a/python_module/megengine/quantization/quantize.py b/python_module/megengine/quantization/quantize.py
index 1d2e6b1f..36d6cc00 100644
--- a/python_module/megengine/quantization/quantize.py
+++ b/python_module/megengine/quantization/quantize.py
@@ -80,9 +80,7 @@ def quantize(module: Module, inplace: bool = True):
 
 
 def quantize_qat(
-    module: Module,
-    inplace: bool = True,
-    qconfig: QConfig = ema_fakequant_qconfig,
+    module: Module, inplace: bool = True, qconfig: QConfig = ema_fakequant_qconfig,
 ):
     r"""
     Recursively convert float :class:`~.Module` to :class:`~.QATModule`
diff --git a/python_module/test/unit/quantization/quantize.py b/python_module/test/unit/quantization/quantize.py
index 36cb5279..14e9acb0 100644
--- a/python_module/test/unit/quantization/quantize.py
+++ b/python_module/test/unit/quantization/quantize.py
@@ -7,7 +7,7 @@
 # "AS IS" BASIS, WITHOUT ARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 from megengine import module as Float
 from megengine.module import qat as QAT
-from megengine.quantization.quantize import _get_quantable_module_names
+from megengine.quantization.quantize import _get_quantable_module_names, quantize_qat
 
 
 def test_get_quantable_module_names():
@@ -36,3 +36,19 @@ def test_get_quantable_module_names():
             and issubclass(value, Float.Module)
             and value != Float.Module
         )
+
+
+def test_disable_quantize():
+    class Net(Float.Module):
+        def __init__(self):
+            super().__init__()
+            self.conv = Float.ConvBnRelu2d(3, 3, 3)
+            self.conv.disable_quantize()
+
+        def forward(self, x):
+            return self.conv(x)
+
+    net = Net()
+    qat_net = quantize_qat(net, inplace=False)
+    assert isinstance(qat_net.conv, Float.ConvBnRelu2d)
+    assert isinstance(qat_net.conv.conv, Float.Conv2d)