diff --git a/Tools/scripts/build_iofirmware.py b/Tools/scripts/build_iofirmware.py
index b0370ed3ce..c206588b2a 100755
--- a/Tools/scripts/build_iofirmware.py
+++ b/Tools/scripts/build_iofirmware.py
@@ -2,6 +2,8 @@
 
 """
 script to build iofirmware and copy to Tools/IO_Firmware
+
+AP_FLAKE8_CLEAN
 """
 
 import os
@@ -11,6 +13,7 @@ import sys
 
 os.environ['PYTHONUNBUFFERED'] = '1'
 
+
 def run_program(cmd_list):
     print("Running (%s)" % " ".join(cmd_list))
     retcode = subprocess.call(cmd_list)
@@ -18,6 +21,7 @@ def run_program(cmd_list):
         print("Build failed: %s" % ' '.join(cmd_list))
         sys.exit(1)
 
+
 print("Building iofirmware")
 run_program(["./waf", "configure", "--board", 'iomcu'])
 run_program(["./waf", "clean"])