diff --git a/platform/broadcom/sonic-platform-modules-accton/as5712-54x/classes/fanutil.py b/platform/broadcom/sonic-platform-modules-accton/as5712-54x/classes/fanutil.py
index c16771e214..4e1a1d63fe 100755
--- a/platform/broadcom/sonic-platform-modules-accton/as5712-54x/classes/fanutil.py
+++ b/platform/broadcom/sonic-platform-modules-accton/as5712-54x/classes/fanutil.py
@@ -122,7 +122,7 @@ def _get_fan_node_val(self, fan_num, node_num):
             return None
 
         try:
-		    val_file.close()
+            val_file.close()
         except:
             logging.debug('GET. unable to close file. device_path:%s', device_path)
             return None
@@ -153,7 +153,7 @@ def _set_fan_node_val(self, fan_num, node_num, val):
         val_file.write(content)
 
         try:
-		    val_file.close()
+            val_file.close()
         except:
             logging.debug('GET. unable to close file. device_path:%s', device_path)
             return None
diff --git a/platform/broadcom/sonic-platform-modules-accton/as5712-54x/classes/thermalutil.py b/platform/broadcom/sonic-platform-modules-accton/as5712-54x/classes/thermalutil.py
index 5b8f890e88..82e2c78530 100755
--- a/platform/broadcom/sonic-platform-modules-accton/as5712-54x/classes/thermalutil.py
+++ b/platform/broadcom/sonic-platform-modules-accton/as5712-54x/classes/thermalutil.py
@@ -80,7 +80,7 @@ def _get_thermal_node_val(self, thermal_num):
             return None
 
         try:
-		    val_file.close()
+            val_file.close()
         except:
             logging.debug('GET. unable to close file. device_path:%s', device_path)
             return None
diff --git a/platform/broadcom/sonic-platform-modules-accton/as5712-54x/utils/accton_as5712_monitor.py b/platform/broadcom/sonic-platform-modules-accton/as5712-54x/utils/accton_as5712_monitor.py
index cd35e9af90..553751e2fb 100755
--- a/platform/broadcom/sonic-platform-modules-accton/as5712-54x/utils/accton_as5712_monitor.py
+++ b/platform/broadcom/sonic-platform-modules-accton/as5712-54x/utils/accton_as5712_monitor.py
@@ -28,6 +28,7 @@
     import logging.config
     import time  # this is only being used as part of the example
     import signal
+    import sys
     from as5712_54x.fanutil import FanUtil
     from as5712_54x.thermalutil import ThermalUtil
 except ImportError as e: