diff --git a/platform/mellanox/mlnx-platform-api/sonic_platform/component.py b/platform/mellanox/mlnx-platform-api/sonic_platform/component.py
index e70007e965..f2a66c6d42 100644
--- a/platform/mellanox/mlnx-platform-api/sonic_platform/component.py
+++ b/platform/mellanox/mlnx-platform-api/sonic_platform/component.py
@@ -323,6 +323,7 @@ class ONIEUpdater(object):
 
 class Component(ComponentBase):
     def __init__(self):
+        super(Component, self).__init__()
         self.name = None
         self.description = None
         self.image_ext_name = None
diff --git a/platform/mellanox/mlnx-platform-api/sonic_platform/thermal.py b/platform/mellanox/mlnx-platform-api/sonic_platform/thermal.py
index c942b0d89d..b4347d5568 100644
--- a/platform/mellanox/mlnx-platform-api/sonic_platform/thermal.py
+++ b/platform/mellanox/mlnx-platform-api/sonic_platform/thermal.py
@@ -373,6 +373,7 @@ class Thermal(ThermalBase):
         """
         index should be a string for category ambient and int for other categories
         """
+        super(Thermal, self).__init__()
         if category == THERMAL_DEV_CATEGORY_AMBIENT:
             self.name = thermal_ambient_name[index]
             self.index = index
diff --git a/platform/mellanox/mlnx-platform-api/sonic_platform/watchdog.py b/platform/mellanox/mlnx-platform-api/sonic_platform/watchdog.py
index e9694f1b2a..909ec6a888 100644
--- a/platform/mellanox/mlnx-platform-api/sonic_platform/watchdog.py
+++ b/platform/mellanox/mlnx-platform-api/sonic_platform/watchdog.py
@@ -63,6 +63,7 @@ class WatchdogImplBase(WatchdogBase):
         Open a watchdog handle
         @param wd_device_path Path to watchdog device
         """
+        super(WatchdogImplBase, self).__init__()
 
         self.watchdog_path = wd_device_path
         self.watchdog = os.open(self.watchdog_path, os.O_WRONLY)