diff --git a/lldb/test/API/functionalities/data-formatter/data-formatter-stl/generic/list/TestDataFormatterGenericList.py b/lldb/test/API/functionalities/data-formatter/data-formatter-stl/generic/list/TestDataFormatterGenericList.py
index 6ecf10e1213de8..8546b1f3b6431b 100644
--- a/lldb/test/API/functionalities/data-formatter/data-formatter-stl/generic/list/TestDataFormatterGenericList.py
+++ b/lldb/test/API/functionalities/data-formatter/data-formatter-stl/generic/list/TestDataFormatterGenericList.py
@@ -60,9 +60,7 @@ def cleanup():
         self.runCmd("type format add -f hex int")
 
         self.expect(
-            "frame variable numbers_list --raw",
-            matching=False,
-            substrs=["size=0"]
+            "frame variable numbers_list --raw", matching=False, substrs=["size=0"]
         )
 
         if stdlib_type == USE_LIBSTDCPP: