diff --git a/vllm/v1/engine/mm_input_mapper.py b/vllm/v1/engine/mm_input_mapper.py
index 9feb7040da393..58ee29bedb201 100644
--- a/vllm/v1/engine/mm_input_mapper.py
+++ b/vllm/v1/engine/mm_input_mapper.py
@@ -51,7 +51,7 @@ def __init__(
 
     def cache_hit_ratio(self, steps) -> float:
         if self.mm_cache_total > 0 and self.mm_cache_total % steps == 0:
-            logger.debug("MMInputMapper: cache_hit_ratio = %.2f",
+            logger.debug("MMInputMapper: cache_hit_ratio = %.2f ",
                          self.mm_cache_hits / self.mm_cache_total)
 
     def process_inputs(