diff --git a/vllm/multimodal/hasher.py b/vllm/multimodal/hasher.py
index 53e289370a9f..f6ab72f4e9b8 100644
--- a/vllm/multimodal/hasher.py
+++ b/vllm/multimodal/hasher.py
@@ -43,7 +43,7 @@ class MultiModalHasher:
                 "ndarray", {
                     "dtype": obj.dtype.str,
                     "shape": obj.shape,
-                    "data": obj.data.tobytes(),
+                    "data": obj.tobytes(),
                 })
 
         logger.warning(