diff --git a/httprunner/plugins/__init__.py b/httprunner/plugins/__init__.py
new file mode 100644
index 00000000..1802047f
--- /dev/null
+++ b/httprunner/plugins/__init__.py
@@ -0,0 +1,2 @@
+# NOTICE:
+# This file should not be deleted, or ImportError will be raised in Python 2.7 when importing plugin
diff --git a/tests/test_api.py b/tests/test_api.py
index 011d32f2..1f84a8b8 100644
--- a/tests/test_api.py
+++ b/tests/test_api.py
@@ -206,7 +206,6 @@ class TestHttpRunner(ApiServerUnittest):
         log_file_path = os.path.join(os.getcwd(), 'reports', "test_log_file.log")
         runner = HttpRunner(failfast=True, log_file=log_file_path)
         runner.run(self.testcase_cli_path)
-        time.sleep(1)
         self.assertTrue(os.path.isfile(log_file_path))
         os.remove(log_file_path)