diff --git a/aider/models.py b/aider/models.py
index eaaae4d36..84723fc4a 100644
--- a/aider/models.py
+++ b/aider/models.py
@@ -144,15 +144,13 @@ MODEL_SETTINGS = [
         weak_model_name="claude-3-haiku-20240307",
         use_repo_map=True,
         send_undo_reply=True,
-        examples_as_sys_msg=True,
     ),
     ModelSettings(
         "openrouter/anthropic/claude-3-opus",
         "diff",
-        weak_model_name="claude-3-haiku-20240307",
+        weak_model_name="openrouter/anthropic/claude-3-haiku",
         use_repo_map=True,
         send_undo_reply=True,
-        examples_as_sys_msg=True,
     ),
     ModelSettings(
         "claude-3-sonnet-20240229",