diff --git a/aider/coders/base_coder.py b/aider/coders/base_coder.py
index 9547d5bca..b08c37a79 100755
--- a/aider/coders/base_coder.py
+++ b/aider/coders/base_coder.py
@@ -1411,13 +1411,15 @@ class Coder:
                 f" Cost: ${format_cost(cost)} request, ${format_cost(self.total_cost)} session."
             )
 
-        self.event("token_usage", 
-                   prompt_tokens=prompt_tokens, 
-                   completion_tokens=completion_tokens, 
-                   total_tokens=prompt_tokens + completion_tokens,
-                   cost=cost,
-                   total_cost=self.total_cost,
-                   model=self.main_model.name)
+        self.event(
+            "token_usage",
+            prompt_tokens=prompt_tokens,
+            completion_tokens=completion_tokens,
+            total_tokens=prompt_tokens + completion_tokens,
+            cost=cost,
+            total_cost=self.total_cost,
+            model=self.main_model.name,
+        )
 
     def get_multi_response_content(self, final=False):
         cur = self.multi_response_content or ""