diff --git a/.flake8 b/.flake8
index 55bbe6911..dfa0cc9ce 100644
--- a/.flake8
+++ b/.flake8
@@ -16,6 +16,7 @@ exclude =
     socs/mibs/MBG-SNMP-ROOT-MIB.py,
     socs/mibs/IBOOTPDU-MIB.py,
     socs/mibs/UPS-MIB.py,
+    socs/mibs/MBG-SYNCBOX-N2X-MIB.py,
     versioneer.py,
     docs/conf.py,
 per-file-ignores =
diff --git a/socs/mibs/MBG-SYNCBOX-N2X-MIB.py b/socs/mibs/MBG-SYNCBOX-N2X-MIB.py
index d062b776f..75e79d2c4 100644
--- a/socs/mibs/MBG-SYNCBOX-N2X-MIB.py
+++ b/socs/mibs/MBG-SYNCBOX-N2X-MIB.py
@@ -5,9 +5,6 @@
 # On host HAWKING platform Linux version 5.15.90.1-microsoft-standard-WSL2 by user davidvng
 # Using Python version 3.8.8 (default, Apr 13 2021, 19:58:26)
 #
-from pysnmp.smi import builder
-
-mibBuilder = builder.MibBuilder()
 
 Integer, ObjectIdentifier, OctetString = mibBuilder.importSymbols("ASN1", "Integer", "ObjectIdentifier", "OctetString")
 NamedValues, = mibBuilder.importSymbols("ASN1-ENUMERATION", "NamedValues")