diff --git a/vllm/entrypoints/openai/tool_parsers/granite_tool_parser.py b/vllm/entrypoints/openai/tool_parsers/granite_tool_parser.py
index b014585f4f934..269493371a790 100644
--- a/vllm/entrypoints/openai/tool_parsers/granite_tool_parser.py
+++ b/vllm/entrypoints/openai/tool_parsers/granite_tool_parser.py
@@ -193,7 +193,6 @@ def extract_tool_calls_streaming(
                     elif prev_arguments:
                         prev_args_json = json.dumps(prev_arguments)
                         if cur_args_json != prev_args_json:
-
                             prefix = find_common_prefix(
                                 prev_args_json, cur_args_json)
                             argument_diff = prefix[sent:]