diff --git a/vllm/tokenizers/hf.py b/vllm/tokenizers/hf.py
index a7b565dca5d8f..2a95f9c82fbd3 100644
--- a/vllm/tokenizers/hf.py
+++ b/vllm/tokenizers/hf.py
@@ -58,7 +58,9 @@ def get_cached_tokenizer(tokenizer: HfTokenizer) -> HfTokenizer:
         def __reduce__(self):
             return get_cached_tokenizer, (tokenizer,)
 
-    CachedTokenizer.__name__ = f"Cached{tokenizer.__class__.__name__}"
+    # Preserve original class name for HuggingFace compatibility.
+    # Some processors validate tokenizer type by checking __name__.
+    CachedTokenizer.__name__ = tokenizer.__class__.__name__
 
     cached_tokenizer.__class__ = CachedTokenizer
     return cached_tokenizer