diff --git a/src/macaron/slsa_analyzer/build_tool/base_build_tool.py b/src/macaron/slsa_analyzer/build_tool/base_build_tool.py
index 4ca001d4f..29357d627 100644
--- a/src/macaron/slsa_analyzer/build_tool/base_build_tool.py
+++ b/src/macaron/slsa_analyzer/build_tool/base_build_tool.py
@@ -155,7 +155,7 @@ def get_build_dirs(self, repo_path: str) -> Iterable[Path]:
             cfg_path = next(list_iter)
             yield Path(cfg_path).parent.relative_to(repo_path)
             while next_item := next(list_iter):
-                if str(Path(cfg_path).parent) in next_item:
+                if next_item.startswith(str(Path(cfg_path).parent)):
                     continue
                 cfg_path = next_item
                 yield Path(next_item).parent.relative_to(repo_path)