diff --git a/pytest_gui_status/status_plugin/plugin.py b/pytest_gui_status/status_plugin/plugin.py
index 6153dd9..e45f5af 100644
--- a/pytest_gui_status/status_plugin/plugin.py
+++ b/pytest_gui_status/status_plugin/plugin.py
@@ -45,7 +45,7 @@ def s(input_):
     import sys
     PY3 = sys.version_info > (3,)
 
-    if hasattr(input_, "__iter__"):
+    if isinstance(input_, list):
         return [s(ele) for ele in input_]
 
     try: