diff --git a/vllm/config.py b/vllm/config.py
index 81e571444ed30..d98cde335c689 100644
--- a/vllm/config.py
+++ b/vllm/config.py
@@ -134,7 +134,7 @@ def __init__(self,
                  enforce_eager: Optional[bool] = None,
                  max_context_len_to_capture: Optional[int] = None,
                  max_seq_len_to_capture: Optional[int] = None,
-                 max_batch_size_to_capture: Optional[int] = None,
+                 max_batchsize_to_capture: Optional[int] = None,
                  max_logprobs: int = 20,
                  disable_sliding_window: bool = False,
                  skip_tokenizer_init: bool = False,
@@ -166,7 +166,7 @@ def __init__(self,
             raise ValueError("`max_context_len_to_capture` is deprecated. "
                              "Use `max_seq_len_to_capture` instead.")
         self.max_seq_len_to_capture = max_seq_len_to_capture
-        self.max_batch_size_to_capture = max_batch_size_to_capture
+        self.max_batchsize_to_capture = max_batchsize_to_capture
         self.max_logprobs = max_logprobs
         self.disable_sliding_window = disable_sliding_window
         self.skip_tokenizer_init = skip_tokenizer_init
diff --git a/vllm/engine/arg_utils.py b/vllm/engine/arg_utils.py
index 251392591ca98..f1e220e34f907 100644
--- a/vllm/engine/arg_utils.py
+++ b/vllm/engine/arg_utils.py
@@ -128,7 +128,7 @@ class EngineArgs:
     enforce_eager: Optional[bool] = None
     max_context_len_to_capture: Optional[int] = None
     max_seq_len_to_capture: int = 8192
-    max_batch_size_to_capture: Optional[int] = None
+    max_batchsize_to_capture: Optional[int] = None
     disable_custom_all_reduce: bool = False
     tokenizer_pool_size: int = 0
     # Note: Specifying a tokenizer pool by passing a class
@@ -515,9 +515,9 @@ def add_cli_args(parser: FlexibleArgumentParser) -> FlexibleArgumentParser:
                             'Additionally for encoder-decoder models, if the '
                             'sequence length of the encoder input is larger '
                             'than this, we fall back to the eager mode.')
-        parser.add_argument('--max-batch-size-to-capture',
+        parser.add_argument('--max-batchsize-to-capture',
                             type=int,
-                            default=EngineArgs.max_batch_size_to_capture,
+                            default=EngineArgs.max_batchsize_to_capture,
                             help='Maximum batch size covered by CUDA '
                             'graphs. When the batch size is larger than '
                             'this, we fall back to eager mode. ')
@@ -889,6 +889,7 @@ def create_model_config(self) -> ModelConfig:
             enforce_eager=self.enforce_eager,
             max_context_len_to_capture=self.max_context_len_to_capture,
             max_seq_len_to_capture=self.max_seq_len_to_capture,
+            max_batchsize_to_capture=self.max_batchsize_to_capture,
             max_logprobs=self.max_logprobs,
             disable_sliding_window=self.disable_sliding_window,
             skip_tokenizer_init=self.skip_tokenizer_init,
diff --git a/vllm/worker/model_runner.py b/vllm/worker/model_runner.py
index 84377b5dfd2b8..0f40c3b573db9 100644
--- a/vllm/worker/model_runner.py
+++ b/vllm/worker/model_runner.py
@@ -980,7 +980,7 @@ def __init__(
         self.max_seq_len_to_capture = self.model_config.max_seq_len_to_capture
         self.max_batchsize_to_capture = _get_max_graph_batch_size(
             self.scheduler_config.max_num_seqs,
-            self.model_config.max_batch_size_to_capture)
+            self.model_config.max_batchsize_to_capture)
 
         self.graph_runners: List[Dict[int, CUDAGraphRunner]] = [
             {} for _ in range(self.parallel_config.pipeline_parallel_size)
@@ -1907,7 +1907,7 @@ def _get_graph_batch_size(batch_size: int) -> int:
 
 
 def _get_max_graph_batch_size(max_num_seqs: int,
-                              max_batch_size_to_capture: Optional[int]) -> int:
+                              max_batchsize_to_capture: Optional[int]) -> int:
     """
     max_num_seqs: Maximum number of sequences in a batch.
     _BATCH_SIZES_TO_CAPTURE: all the sizes that we want to capture.
@@ -1919,10 +1919,10 @@ def _get_max_graph_batch_size(max_num_seqs: int,
     if not, it means the padded size is larger than the largest size in
     _BATCH_SIZES_TO_CAPTURE, return the largest size in _BATCH_SIZES_TO_CAPTURE.
     """
-    if max_batch_size_to_capture is None:
-        max_batch_size_to_capture = max_num_seqs
-    max_batch_size_to_capture = min(max_batch_size_to_capture, max_num_seqs)
-    padded_size = _get_graph_batch_size(max_batch_size_to_capture)
+    if max_batchsize_to_capture is None:
+        max_batchsize_to_capture = max_num_seqs
+    max_batchsize_to_capture = min(max_batchsize_to_capture, max_num_seqs)
+    padded_size = _get_graph_batch_size(max_batchsize_to_capture)
     if padded_size in _BATCH_SIZES_TO_CAPTURE:
         return padded_size
     assert padded_size > _BATCH_SIZES_TO_CAPTURE[-1]