diff --git a/vllm/model_executor/models/mamba.py b/vllm/model_executor/models/mamba.py
index 38b51c20b7eae..7cd0614309b85 100644
--- a/vllm/model_executor/models/mamba.py
+++ b/vllm/model_executor/models/mamba.py
@@ -4,9 +4,6 @@
 from typing import Iterable, List, Optional, Tuple
 
 import torch
-from causal_conv1d import causal_conv1d_fn, causal_conv1d_update
-from mamba_ssm.ops.selective_scan_interface import selective_scan_fn
-from mamba_ssm.ops.triton.selective_state_update import selective_state_update
 from torch import nn
 from torch.nn.parameter import Parameter
 from transformers import MambaConfig
@@ -21,6 +18,10 @@
                                                MergedColumnParallelLinear,
                                                RowParallelLinear)
 from vllm.model_executor.layers.logits_processor import LogitsProcessor
+from vllm.model_executor.layers.mamba.ops.causal_conv1d import (
+    causal_conv1d_fn, causal_conv1d_update)
+from vllm.model_executor.layers.mamba.ops.mamba_ssm import (
+    selective_scan_fn, selective_state_update)
 from vllm.model_executor.layers.quantization.base_config import (
     QuantizationConfig)
 from vllm.model_executor.layers.sampler import Sampler
@@ -157,7 +158,7 @@ def mamba_forward(self,
                     (self.conv_kernel_size - hidden_states.shape[-1], 0))
                 cache_params.conv_state.copy_(conv_states)
 
-            hidden_states = causal_conv1d_fn(
+            hidden_states, _ = causal_conv1d_fn(
                 hidden_states,
                 conv_weights,
                 self.conv1d.bias,