diff --git a/tests/kernels/test_causal_conv1d.py b/tests/kernels/test_causal_conv1d.py
index 43222b5c30dcd..f9b11018288be 100644
--- a/tests/kernels/test_causal_conv1d.py
+++ b/tests/kernels/test_causal_conv1d.py
@@ -2,15 +2,13 @@
 
 import pytest
 import torch
+import torch.nn.functional as F
 
 from tests.kernels.utils import opcheck
 from vllm import _custom_ops as ops  # noqa: F401
 from vllm.attention.backends.utils import PAD_SLOT_ID
 from vllm.model_executor.layers.mamba.ops.causal_conv1d import (
-    causal_conv1d_fn, causal_conv1d_native, causal_conv1d_update,
-    causal_conv1d_update_native)
-
-
+    causal_conv1d_fn, causal_conv1d_update)
 from vllm.platforms import current_platform
 
 
@@ -188,7 +186,7 @@ def test_causal_conv1d(batch, dim, seqlen, width, has_bias, silu_activation,
                            has_initial_state=torch.ones(batch,
                                                         dtype=torch.bool,
                                                         device=x.device))
-    out_ref, final_states_ref = causal_conv1d_native(
+    out_ref, final_states_ref = causal_conv1d_ref(
         x_ref,
         weight_ref,
         bias_ref,
@@ -240,11 +238,11 @@ def test_causal_conv1d_update(dim, width, seqlen, has_bias, silu_activation,
                                weight,
                                bias,
                                activation=activation)
-    out_ref = causal_conv1d_update_native(x_ref,
-                                          conv_state_ref,
-                                          weight,
-                                          bias,
-                                          activation=activation)
+    out_ref = causal_conv1d_update_ref(x_ref,
+                                       conv_state_ref,
+                                       weight,
+                                       bias,
+                                       activation=activation)
 
     assert torch.equal(conv_state, conv_state_ref)
     assert torch.allclose(out, out_ref, rtol=rtol, atol=atol)
@@ -312,11 +310,11 @@ def test_causal_conv1d_update_with_batch_gather(with_padding, dim, width,
                                activation=activation,
                                conv_state_indices=padded_state_indices,
                                pad_slot_id=PAD_SLOT_ID)
-    out_ref = causal_conv1d_update_native(x_ref[:batch_size],
-                                          conv_state_ref,
-                                          weight,
-                                          bias,
-                                          activation=activation)
+    out_ref = causal_conv1d_update_ref(x_ref[:batch_size],
+                                       conv_state_ref,
+                                       weight,
+                                       bias,
+                                       activation=activation)
 
     assert torch.equal(conv_state[conv_state_indices, :], conv_state_ref)
     assert torch.allclose(out[:batch_size], out_ref, rtol=rtol, atol=atol)
@@ -407,7 +405,7 @@ def test_causal_conv1d_varlen(with_padding, dim, seqlen, width, has_bias,
         if padded_state_indices[i] == PAD_SLOT_ID:
             continue
         out_ref_b.append(
-            causal_conv1d_native(
+            causal_conv1d_ref(
                 x_s,
                 weight_ref,
                 bias_ref,
diff --git a/vllm/model_executor/layers/mamba/mamba_mixer.py b/vllm/model_executor/layers/mamba/mamba_mixer.py
index b200d3ebf9c29..8ef0a6cdf2c52 100644
--- a/vllm/model_executor/layers/mamba/mamba_mixer.py
+++ b/vllm/model_executor/layers/mamba/mamba_mixer.py
@@ -7,7 +7,8 @@
     get_tensor_model_parallel_rank, get_tensor_model_parallel_world_size)
 from vllm.model_executor.custom_op import CustomOp
 from vllm.model_executor.layers.layernorm import RMSNorm
-from vllm.model_executor.layers.linear import (ColumnParallelLinear, MergedColumnParallelLinear,
+from vllm.model_executor.layers.linear import (ColumnParallelLinear,
+                                               MergedColumnParallelLinear,
                                                RowParallelLinear)
 from vllm.model_executor.layers.mamba.ops.causal_conv1d import (
     causal_conv1d_fn, causal_conv1d_update)
@@ -59,8 +60,8 @@ def __init__(self,
         self.conv1d.weight.data = self.conv1d.weight.data.unsqueeze(1)
 
         self.in_proj = MergedColumnParallelLinear(hidden_size,
-                                            [intermediate_size] * 2,
-                                            bias=use_bias)
+                                                  [intermediate_size] * 2,
+                                                  bias=use_bias)
         # selective projection used to make dt, B and C input dependent
         self.x_proj = RowParallelLinear(
             intermediate_size,
diff --git a/vllm/model_executor/layers/mamba/ops/causal_conv1d.py b/vllm/model_executor/layers/mamba/ops/causal_conv1d.py
index c1381762ce2a8..be5639df985fa 100644
--- a/vllm/model_executor/layers/mamba/ops/causal_conv1d.py
+++ b/vllm/model_executor/layers/mamba/ops/causal_conv1d.py
@@ -4,7 +4,6 @@
 from typing import Optional
 
 import torch
-import torch.nn.functional as F
 
 from vllm import _custom_ops as ops
 from vllm.attention.backends.utils import PAD_SLOT_ID
@@ -101,5 +100,3 @@ def causal_conv1d_update(x: torch.Tensor,
     if unsqueeze:
         x = x.squeeze(-1)
     return x
-
-