diff --git a/brainpy/_src/math/object_transform/autograd.py b/brainpy/_src/math/object_transform/autograd.py
index f8164e615..5f06b4e67 100644
--- a/brainpy/_src/math/object_transform/autograd.py
+++ b/brainpy/_src/math/object_transform/autograd.py
@@ -915,8 +915,8 @@ def _valid_jaxtype(arg):
 
 def _check_output_dtype_revderiv(name, holomorphic, x):
   aval = core.get_aval(x)
-  if jnp.issubdtype(aval.dtype, dtypes.extended):
-    raise TypeError(f"{name} with output element type {aval.dtype.name}")
+  # if jnp.issubdtype(aval.dtype, dtypes.extended):
+  #   raise TypeError(f"{name} with output element type {aval.dtype.name}")
   if holomorphic:
     if not dtypes.issubdtype(aval.dtype, np.complexfloating):
       raise TypeError(f"{name} with holomorphic=True requires outputs with complex dtype, "
@@ -937,8 +937,8 @@ def _check_output_dtype_revderiv(name, holomorphic, x):
 def _check_input_dtype_revderiv(name, holomorphic, allow_int, x):
   _check_arg(x)
   aval = core.get_aval(x)
-  if jnp.issubdtype(aval.dtype, dtypes.extended):
-    raise TypeError(f"{name} with input element type {aval.dtype.name}")
+  # if jnp.issubdtype(aval.dtype, dtypes.extended):
+  #   raise TypeError(f"{name} with input element type {aval.dtype.name}")
   if holomorphic:
     if not dtypes.issubdtype(aval.dtype, np.complexfloating):
       raise TypeError(f"{name} with holomorphic=True requires inputs with complex dtype, "
@@ -970,8 +970,8 @@ def _check_output_dtype_jacfwd(holomorphic, x):
 def _check_input_dtype_jacfwd(holomorphic: bool, x: Any) -> None:
   _check_arg(x)
   aval = core.get_aval(x)
-  if jnp.issubdtype(aval.dtype, dtypes.extended):
-    raise TypeError(f"jacfwd with input element type {aval.dtype.name}")
+  # if jnp.issubdtype(aval.dtype, dtypes.extended):
+  #   raise TypeError(f"jacfwd with input element type {aval.dtype.name}")
   if holomorphic:
     if not dtypes.issubdtype(aval.dtype, np.complexfloating):
       raise TypeError("jacfwd with holomorphic=True requires inputs with complex "