diff --git a/lib/core/convert.py b/lib/core/convert.py
index 48c904e9e..c3446cc14 100644
--- a/lib/core/convert.py
+++ b/lib/core/convert.py
@@ -5,16 +5,9 @@ Copyright (c) 2006-2012 sqlmap developers (http://sqlmap.org/)
 See the file 'doc/COPYING' for copying permission
 """
 
-try:
-    import hashlib
-except:
-    import md5
-    import sha
-
 import json
 import pickle
 import sys
-import struct
 
 from lib.core.settings import IS_WIN
 from lib.core.settings import UNICODE_ENCODING
diff --git a/lib/core/exception.py b/lib/core/exception.py
index 37ba1999d..39d0c13f7 100644
--- a/lib/core/exception.py
+++ b/lib/core/exception.py
@@ -44,9 +44,6 @@ class SqlmapSilentQuitException(SqlmapBaseException):
 class SqlmapUserQuitException(SqlmapBaseException):
     pass
 
-class SqlmapRegExprException(SqlmapBaseException):
-    pass
-
 class SqlmapSyntaxException(SqlmapBaseException):
     pass
 
diff --git a/lib/core/option.py b/lib/core/option.py
index f71ea9b6b..35d25ba26 100644
--- a/lib/core/option.py
+++ b/lib/core/option.py
@@ -111,7 +111,6 @@ from lib.core.settings import NULL
 from lib.core.settings import ORACLE_ALIASES
 from lib.core.settings import PARAMETER_SPLITTING_REGEX
 from lib.core.settings import PGSQL_ALIASES
-from lib.core.settings import PYVERSION
 from lib.core.settings import SITE
 from lib.core.settings import SQLITE_ALIASES
 from lib.core.settings import SUPPORTED_DBMS
diff --git a/lib/core/subprocessng.py b/lib/core/subprocessng.py
index 717b52190..0d7f78a17 100644
--- a/lib/core/subprocessng.py
+++ b/lib/core/subprocessng.py
@@ -11,7 +11,6 @@ import subprocess
 import sys
 import time
 
-from lib.core.common import dataToStdout
 from lib.core.settings import IS_WIN
 
 if IS_WIN:
diff --git a/lib/utils/api.py b/lib/utils/api.py
index 4f45c3f27..59c578d3e 100644
--- a/lib/utils/api.py
+++ b/lib/utils/api.py
@@ -5,32 +5,22 @@ Copyright (c) 2006-2012 sqlmap developers (http://sqlmap.org/)
 See the file 'doc/COPYING' for copying permission
 """
 
-import json
-import logging
 import os
 import shutil
-import sys
 import tempfile
-import types
 
 from subprocess import PIPE
 
-from lib.controller.controller import start
 from lib.core.common import unArrayizeValue
 from lib.core.convert import base64pickle
 from lib.core.convert import base64unpickle
 from lib.core.convert import hexencode
 from lib.core.convert import jsonize
-from lib.core.convert import stdoutencode
 from lib.core.data import paths
-from lib.core.data import kb
 from lib.core.data import logger
 from lib.core.datatype import AttribDict
 from lib.core.defaults import _defaults
-from lib.core.exception import SqlmapMissingDependence
 from lib.core.optiondict import optDict
-from lib.core.option import init
-from lib.core.settings import UNICODE_ENCODING
 from lib.core.subprocessng import Popen as execute
 from lib.core.subprocessng import send_all
 from lib.core.subprocessng import recv_some
@@ -43,7 +33,6 @@ from thirdparty.bottle.bottle import request
 from thirdparty.bottle.bottle import response
 from thirdparty.bottle.bottle import run
 from thirdparty.bottle.bottle import static_file
-from thirdparty.bottle.bottle import template
 
 RESTAPI_SERVER_HOST = "127.0.0.1"
 RESTAPI_SERVER_PORT = 8775