diff --git a/device/celestica/x86_64-cel_seastone-r0/sonic_platform/psu.py b/device/celestica/x86_64-cel_seastone-r0/sonic_platform/psu.py
index da365dff59ab..7dd647be4e2c 100644
--- a/device/celestica/x86_64-cel_seastone-r0/sonic_platform/psu.py
+++ b/device/celestica/x86_64-cel_seastone-r0/sonic_platform/psu.py
@@ -408,7 +408,7 @@ def get_position_in_parent(self):
         Returns:
             integer: The 1-based relative physical position in parent device or -1 if cannot determine the position
         """
-        return -1
+        return self.index + 1
 
     def is_replaceable(self):
         """
diff --git a/device/celestica/x86_64-cel_seastone-r0/sonic_platform/thermal.py b/device/celestica/x86_64-cel_seastone-r0/sonic_platform/thermal.py
index c605a28d220c..4b584a6db97f 100644
--- a/device/celestica/x86_64-cel_seastone-r0/sonic_platform/thermal.py
+++ b/device/celestica/x86_64-cel_seastone-r0/sonic_platform/thermal.py
@@ -307,8 +307,6 @@ def get_position_in_parent(self):
         """
         Retrieves the thermal position information
         Returns:
-            A int value, 0 represent ASIC thermal, 1 represent CPU thermal info
+            A int value, index of thermal
         """
-        if self.postion == "cpu":
-            return 1
-        return 0
+        return self.index + 1