diff --git a/allure-python-commons/src/model2.py b/allure-python-commons/src/model2.py
index c9a0f41b..074bff94 100644
--- a/allure-python-commons/src/model2.py
+++ b/allure-python-commons/src/model2.py
@@ -105,3 +105,4 @@ class Status(object):
     BROKEN = 'broken'
     PASSED = 'passed'
     SKIPPED = 'skipped'
+    UNKNOWN = 'unknown'