diff --git a/tests/common/fixtures/advanced_reboot.py b/tests/common/fixtures/advanced_reboot.py
index 6f7d10b4bc1..851407329e4 100644
--- a/tests/common/fixtures/advanced_reboot.py
+++ b/tests/common/fixtures/advanced_reboot.py
@@ -566,6 +566,7 @@ def runRebootTest(self):
             count += 1
             test_case_name = str(self.request.node.name) + str(rebootOper)
             test_results[test_case_name] = list()
+            post_reboot_analysis = None
             try:
                 if self.preboot_setup:
                     self.preboot_setup()