diff --git a/tools/startup_guard/startup_checker/cmds_rule.py b/tools/startup_guard/startup_checker/cmds_rule.py
index e0c28b76e114acb6984420fc8904d78a5a8eca9c..0c98580bc9ff98acf2a3c858a81e9a5de59ac437 100644
--- a/tools/startup_guard/startup_checker/cmds_rule.py
+++ b/tools/startup_guard/startup_checker/cmds_rule.py
@@ -112,7 +112,7 @@ class cmdRule(BaseRule):
 
         passed = True
         for key, item in parser._services.items():
-            if item.get("secon") is None:
+            if item.get("secon") == "":
                 output_str = "%s \'secon\' is empty" % key
                 self.warn("%s" % str(output_str))
                 passed = False