diff --git a/lib/parse/cmdline.py b/lib/parse/cmdline.py
index e86620f47..0f75689c7 100644
--- a/lib/parse/cmdline.py
+++ b/lib/parse/cmdline.py
@@ -5,7 +5,6 @@ Copyright (c) 2006-2013 sqlmap developers (http://sqlmap.org/)
 See the file 'doc/COPYING' for copying permission
 """
 
-import codecs
 import os
 import sys
 
diff --git a/plugins/dbms/hsqldb/enumeration.py b/plugins/dbms/hsqldb/enumeration.py
index a9bc518be..d9a60def2 100644
--- a/plugins/dbms/hsqldb/enumeration.py
+++ b/plugins/dbms/hsqldb/enumeration.py
@@ -13,7 +13,6 @@ from lib.core.data import queries
 from lib.core.common import Backend
 from lib.core.common import unArrayizeValue
 from lib.request import inject
-from lib.parse.banner import bannerParser
 
 class Enumeration(GenericEnumeration):
     def __init__(self):
diff --git a/plugins/dbms/hsqldb/fingerprint.py b/plugins/dbms/hsqldb/fingerprint.py
index 6dd126ab0..4e72e9dde 100644
--- a/plugins/dbms/hsqldb/fingerprint.py
+++ b/plugins/dbms/hsqldb/fingerprint.py
@@ -9,13 +9,11 @@ import re
 
 from lib.core.common import Backend
 from lib.core.common import Format
-from lib.core.common import getUnicode
 from lib.core.common import unArrayizeValue
 from lib.core.data import conf
 from lib.core.data import kb
 from lib.core.data import logger
 from lib.core.enums import DBMS
-from lib.core.enums import OS
 from lib.core.session import setDbms
 from lib.core.settings import HSQLDB_ALIASES
 from lib.core.settings import UNKNOWN_DBMS_VERSION
diff --git a/plugins/dbms/postgresql/fingerprint.py b/plugins/dbms/postgresql/fingerprint.py
index 85743e4dc..f4c1c43e1 100644
--- a/plugins/dbms/postgresql/fingerprint.py
+++ b/plugins/dbms/postgresql/fingerprint.py
@@ -7,7 +7,6 @@ See the file 'doc/COPYING' for copying permission
 
 from lib.core.common import Backend
 from lib.core.common import Format
-from lib.core.common import singleTimeWarnMessage
 from lib.core.data import conf
 from lib.core.data import kb
 from lib.core.data import logger
@@ -15,7 +14,6 @@ from lib.core.enums import DBMS
 from lib.core.enums import OS
 from lib.core.session import setDbms
 from lib.core.settings import PGSQL_ALIASES
-from lib.core.settings import PGSQL_SYSTEM_DBS
 from lib.request import inject
 from plugins.generic.fingerprint import Fingerprint as GenericFingerprint