diff --git a/vllm/v1/engine/detokenizer.py b/vllm/v1/engine/detokenizer.py
index dce8765fc..e77a316b2 100644
--- a/vllm/v1/engine/detokenizer.py
+++ b/vllm/v1/engine/detokenizer.py
@@ -280,7 +280,7 @@ class SlowIncrementalDetokenizer(BaseIncrementalDetokenizer):
             # Prompt embedding requests cannot be detokenized, in general.
             self.tokens = [""] * self.prompt_len
             self.prefix_offset = 0
-            self.read_offest = 0
+            self.read_offset = 0
 
         self.token_ids.extend(request.prompt_token_ids or [0] * self.prompt_len)