diff --git a/sonic-chassisd/tests/mock_platform.py b/sonic-chassisd/tests/mock_platform.py
index 7f8ed6726..a2a86b4a9 100644
--- a/sonic-chassisd/tests/mock_platform.py
+++ b/sonic-chassisd/tests/mock_platform.py
@@ -75,6 +75,17 @@ def set_midplane_reachable(self, up):
     def get_all_asics(self):
         return self.asic_list
 
+    def get_reboot_cause(self):
+        reboot_cause = {
+            'name': '2024_10_19_01_17_18',
+            'cause': 'reboot',
+            'comment': 'N/A',
+            'time': 'N/A',
+            'device': 'DPU0',
+            'user': 'bla'
+        }
+        return reboot_cause
+
     def get_serial(self):
         return self.module_serial