diff --git a/isort/finders.py b/isort/finders.py
index 210ddfd5e..9fc98b5fb 100644
--- a/isort/finders.py
+++ b/isort/finders.py
@@ -186,6 +186,8 @@ def find(self, module_name: str) -> Optional[str]:
                     return sections.STDLIB
                 elif self.conda_env and self.conda_env in prefix:
                     return sections.THIRDPARTY
+                if os.getcwd() in package_path:
+                    return sections.FIRSTPARTY
                 elif os.path.normcase(prefix).startswith(self.stdlib_lib_prefix):
                     return sections.STDLIB  # pragma: no cover - edge case for one OS. Hard to test.
                 return self.config.default_section