diff --git a/pr_agent/algo/pr_processing.py b/pr_agent/algo/pr_processing.py
index d02110c7..59b9da26 100644
--- a/pr_agent/algo/pr_processing.py
+++ b/pr_agent/algo/pr_processing.py
@@ -146,7 +146,7 @@ def pr_generate_extended_diff(pr_languages: list,
 
             # extend each patch with extra lines of context
             extended_patch = extend_patch(original_file_content_str, patch, num_lines=patch_extra_lines)
-            if not extend_patch:
+            if not extended_patch:
                 get_logger().warning(f"Failed to extend patch for file: {file.filename}")
                 continue
             full_extended_patch = f"\n\n## {file.filename}\n\n{extended_patch}\n"