diff --git a/tools/testing/selftests/tc-testing/plugin-lib/scapyPlugin.py b/tools/testing/selftests/tc-testing/plugin-lib/scapyPlugin.py index 229ee185b27e..a7b21658af9b 100644 --- a/tools/testing/selftests/tc-testing/plugin-lib/scapyPlugin.py +++ b/tools/testing/selftests/tc-testing/plugin-lib/scapyPlugin.py @@ -36,7 +36,7 @@ class SubPlugin(TdcPlugin): for k in scapy_keys: if k not in scapyinfo: keyfail = True - missing_keys.add(k) + missing_keys.append(k) if keyfail: print('{}: Scapy block present in the test, but is missing info:' .format(self.sub_class))