diff --git a/pr_agent/algo/git_patch_processing.py b/pr_agent/algo/git_patch_processing.py
index 83348d31..f9e0f73e 100644
--- a/pr_agent/algo/git_patch_processing.py
+++ b/pr_agent/algo/git_patch_processing.py
@@ -19,8 +19,8 @@ def extend_patch(original_file_str, patch_str, patch_extra_lines_before=0,
             return ""
 
     # skip patches
-    patch_extension_skip_types = get_settings().config.skip_types #[".md",".txt"]
-    if patch_extension_skip_types:
+    patch_extension_skip_types = get_settings().config.patch_extension_skip_types #[".md",".txt"]
+    if patch_extension_skip_types and filename:
         if any([filename.endswith(skip_type) for skip_type in patch_extension_skip_types]):
             return patch_str