diff --git a/src/runner.py b/src/runner.py
index d8078b5..9e0a09b 100644
--- a/src/runner.py
+++ b/src/runner.py
@@ -26,7 +26,8 @@ class Runner:
 
     def _run_main_test(self):
         if isinstance(self.main_test_name, str):
-            self._run_pytest(self.main_test_name)
+            full_test_path = self.root_dir / self.test_dir_name / self.main_test_name
+            self._run_pytest(full_test_path)
 
     def _run_pytest(self, full_test_path: Path):
         """runs pytest programmatically