diff --git a/aria/model/processing_aria.py b/aria/model/processing_aria.py
index afbcc4b..c425c5d 100644
--- a/aria/model/processing_aria.py
+++ b/aria/model/processing_aria.py
@@ -18,6 +18,7 @@
 # under the License.
 
 import inspect
+import logging
 import re
 from typing import List, Optional, Union
 
@@ -34,6 +35,8 @@
 
 from .vision_processor import AriaVisionProcessor
 
+logger = logging.getLogger(__name__)
+
 
 class AriaProcessor(ProcessorMixin):
     """
@@ -229,6 +232,7 @@ def from_pretrained(
             **cls._extract_kwargs(AriaVisionProcessor.from_pretrained, **kwargs),
         )
         if "use_fast" in kwargs:
+            logger.warning("use_fast is not supported for AriaProcessor. Ignoring...")
             kwargs.pop("use_fast")
         try:
             tokenizer = AutoTokenizer.from_pretrained(