diff --git a/br-ext/scripts/make_def_config.py b/br-ext/scripts/make_def_config.py
index 5d42cac87e54ebf86fdbffd4fe7c284d574c653c..4fc6666d8498ab3b5b6936b99ff9127e99f8c380 100644
--- a/br-ext/scripts/make_def_config.py
+++ b/br-ext/scripts/make_def_config.py
@@ -47,7 +47,7 @@ def main():
         br_ext_optee = args.br_ext_optee
     else:
         br_ext_optee = '../' + args.br_ext_optee
-        
+
     os.execlp(args.make_cmd, args.make_cmd, '-C', args.br, 'O=' + out,
               'BR2_EXTERNAL=' + br_ext_optee,
               'BR2_DEFCONFIG=' + out + '/defconfig', 'defconfig')