diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index 10e819d7..e7a287da 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -13,6 +13,7 @@
 - change: rename TestCaseInOut field, config_vars and export_vars
 - change: rename StepData field, export_vars
 - change: add `--tb=short` for `hrun` command to use shorter traceback format by default
+- change: search debugtalk.py upward recursively until system root dir
 
 ## 3.0.8 (2020-06-04)
 
diff --git a/httprunner/loader.py b/httprunner/loader.py
index ff37c15c..4982eb92 100644
--- a/httprunner/loader.py
+++ b/httprunner/loader.py
@@ -265,7 +265,7 @@ def load_builtin_functions() -> Dict[Text, Callable]:
 
 def locate_file(start_path: Text, file_name: Text) -> Text:
     """ locate filename and return absolute file path.
-        searching will be recursive upward until current working directory or system root dir.
+        searching will be recursive upward until system root dir.
 
     Args:
         file_name (str): target locate file name
@@ -289,13 +289,6 @@ def locate_file(start_path: Text, file_name: Text) -> Text:
     if os.path.isfile(file_path):
         return os.path.abspath(file_path)
 
-    # current working directory
-    cwd = os.getcwd()
-    if os.path.abspath(start_dir_path) == cwd:
-        raise exceptions.FileNotFound(
-            f"{file_name} not found for {start_path}\ncurrent working directory: {cwd}"
-        )
-
     # system root dir
     # Windows, e.g. 'E:\\'
     # Linux/Darwin, '/'