diff --git a/aider_gitea/__init__.py b/aider_gitea/__init__.py
index 44554dd..5b84aed 100644
--- a/aider_gitea/__init__.py
+++ b/aider_gitea/__init__.py
@@ -386,7 +386,7 @@ def verify_solution(repository_path: Path, issue_content: str) -> bool:
         repository_path,
         [
             'Concisely summarize following changeset',
-            get_diff(repository_path, 'HEAD', 'main'),
+            get_diff(repository_path, 'main', 'HEAD'),
         ],
     )