diff --git a/vllm/outputs.py b/vllm/outputs.py
index 2e957a810cd4e..fea521d129245 100644
--- a/vllm/outputs.py
+++ b/vllm/outputs.py
@@ -41,7 +41,7 @@ class CompletionOutput:
                 f"text={self.text!r}, "
                 f"token_ids={self.token_ids}, "
                 f"cumulative_logprob={self.cumulative_logprob}, "
-                f"logprobs={self.logprobs},"
+                f"logprobs={self.logprobs}, "
                 f"finish_reason={self.finish_reason})")