diff --git a/litellm/types/utils.py b/litellm/types/utils.py
index 696fb5b83..e9fe7d963 100644
--- a/litellm/types/utils.py
+++ b/litellm/types/utils.py
@@ -504,7 +504,7 @@ class Usage(CompletionUsage):
         if "prompt_cache_hit_tokens" in params and isinstance(
             params["prompt_cache_hit_tokens"], int
         ):
-            self._cache_read_input_tokens = params["prompt_cache_hit_tokens=0"]
+            self._cache_read_input_tokens = params["prompt_cache_hit_tokens"]
 
         for k, v in params.items():
             setattr(self, k, v)