diff --git a/pytest_gui_status/status_plugin/plugin.py b/pytest_gui_status/status_plugin/plugin.py
index 5f3b966..6153dd9 100644
--- a/pytest_gui_status/status_plugin/plugin.py
+++ b/pytest_gui_status/status_plugin/plugin.py
@@ -50,9 +50,9 @@ def s(input_):
 
     try:
         if PY3:
-            assert(type(input_) in [str, unicode, bytes])
-        else:
             assert(type(input_) in [str, bytes])
+        else:
+            assert(type(input_) in [str, unicode, bytes])
     except AssertionError:
         return input_