diff --git a/aider/coders/base_coder.py b/aider/coders/base_coder.py
index 2d9b34358..8a0a9f4bb 100755
--- a/aider/coders/base_coder.py
+++ b/aider/coders/base_coder.py
@@ -321,7 +321,7 @@ class Coder:
             )
 
         self.summarizer = summarizer or ChatSummary(
-            [self.main_model, self.main_model.weak_model],
+            [self.main_model.weak_model, self.main_model],
             self.main_model.max_chat_history_tokens,
         )