diff --git a/tools/testing/kunit/kunit.py b/tools/testing/kunit/kunit.py
index ec73b07d1265..787b6d4ad716 100755
--- a/tools/testing/kunit/kunit.py
+++ b/tools/testing/kunit/kunit.py
@@ -23,7 +23,7 @@ import kunit_parser
 KunitResult = namedtuple('KunitResult', ['status','result','elapsed_time'])
 
 KunitConfigRequest = namedtuple('KunitConfigRequest',
-				['build_dir', 'defconfig', 'make_options'])
+				['build_dir', 'make_options'])
 KunitBuildRequest = namedtuple('KunitBuildRequest',
 			       ['jobs', 'build_dir', 'alltests',
 				'make_options'])
@@ -130,7 +130,6 @@ def run_tests(linux: kunit_kernel.LinuxSourceTree,
 	run_start = time.time()
 
 	config_request = KunitConfigRequest(request.build_dir,
-					    request.defconfig,
 					    request.make_options)
 	config_result = config_tests(linux, config_request)
 	if config_result.status != KunitStatus.SUCCESS:
@@ -212,7 +211,6 @@ def main(argv, linux=None):
 						help='Ensures that .config contains all of '
 						'the options in .kunitconfig')
 	add_common_opts(config_parser)
-	add_config_opts(config_parser)
 
 	build_parser = subparser.add_parser('build', help='Builds a kernel with KUnit tests')
 	add_common_opts(build_parser)
@@ -238,11 +236,14 @@ def main(argv, linux=None):
 	cli_args = parser.parse_args(argv)
 
 	if cli_args.subcommand == 'run':
-                if not os.path.exists(cli_args.build_dir):
-                    os.mkdir(cli_args.build_dir)
-                kunit_kernel.kunitconfig_path = os.path.join(
-                        cli_args.build_dir,
-                        kunit_kernel.kunitconfig_path)
+		if not os.path.exists(cli_args.build_dir):
+			os.mkdir(cli_args.build_dir)
+		kunit_kernel.kunitconfig_path = os.path.join(
+			cli_args.build_dir,
+			kunit_kernel.kunitconfig_path)
+
+		if not os.path.exists(kunit_kernel.kunitconfig_path):
+			create_default_kunitconfig()
 
 		if not linux:
 			linux = kunit_kernel.LinuxSourceTree()
@@ -264,11 +265,13 @@ def main(argv, linux=None):
 				cli_args.build_dir,
 				kunit_kernel.kunitconfig_path)
 
+		if not os.path.exists(kunit_kernel.kunitconfig_path):
+			create_default_kunitconfig()
+
 		if not linux:
 			linux = kunit_kernel.LinuxSourceTree()
 
 		request = KunitConfigRequest(cli_args.build_dir,
-					     cli_args.defconfig,
 					     cli_args.make_options)
 		result = config_tests(linux, request)
 		kunit_parser.print_with_timestamp((
@@ -284,6 +287,9 @@ def main(argv, linux=None):
 				cli_args.build_dir,
 				kunit_kernel.kunitconfig_path)
 
+		if not os.path.exists(kunit_kernel.kunitconfig_path):
+			create_default_kunitconfig()
+
 		if not linux:
 			linux = kunit_kernel.LinuxSourceTree()
 
@@ -305,6 +311,9 @@ def main(argv, linux=None):
 				cli_args.build_dir,
 				kunit_kernel.kunitconfig_path)
 
+		if not os.path.exists(kunit_kernel.kunitconfig_path):
+			create_default_kunitconfig()
+
 		if not linux:
 			linux = kunit_kernel.LinuxSourceTree()