diff --git a/lib/core/shell.py b/lib/core/shell.py
index 36d2a4e10..5e5120581 100644
--- a/lib/core/shell.py
+++ b/lib/core/shell.py
@@ -57,7 +57,7 @@ class CompleterNG(rlcompleter.Completer):
 def autoCompletion(sqlShell=False, osShell=False):
     # First of all we check if the readline is available, by default
     # it is not in Python default installation on Windows
-    if not readline.haveReadline:
+    if not readline._readline:
         return
 
     if sqlShell:
diff --git a/lib/parse/banner.py b/lib/parse/banner.py
index da3ae5a5b..b0f9d29b9 100644
--- a/lib/parse/banner.py
+++ b/lib/parse/banner.py
@@ -28,6 +28,8 @@ class MSSQLBannerHandler(ContentHandler):
     """
 
     def __init__(self, banner, info):
+        ContentHandler.__init__(self)
+
         self.__banner        = sanitizeStr(banner)
         self.__inVersion     = False
         self.__inServicePack = False
diff --git a/lib/parse/handler.py b/lib/parse/handler.py
index 7b43051bf..9d7b0293c 100644
--- a/lib/parse/handler.py
+++ b/lib/parse/handler.py
@@ -18,6 +18,8 @@ class FingerprintHandler(ContentHandler):
     """
 
     def __init__(self, banner, info):
+        ContentHandler.__init__(self)
+
         self.__banner      = sanitizeStr(banner)
         self.__regexp      = None
         self.__match       = None
diff --git a/lib/parse/html.py b/lib/parse/html.py
index 22257209a..c36bcb433 100644
--- a/lib/parse/html.py
+++ b/lib/parse/html.py
@@ -25,6 +25,8 @@ class htmlHandler(ContentHandler):
     """
 
     def __init__(self, page):
+        ContentHandler.__init__(self)
+
         self.__dbms   = None
         self.__page   = page
         self.__regexp = None
diff --git a/lib/request/comparison.py b/lib/request/comparison.py
index d0afee9a8..81cffa954 100644
--- a/lib/request/comparison.py
+++ b/lib/request/comparison.py
@@ -23,7 +23,7 @@ from lib.core.settings import DIFF_TOLERANCE
 from lib.core.settings import LOWER_RATIO_BOUND
 from lib.core.settings import UPPER_RATIO_BOUND
 
-def comparison(page, headers=None, getSeqMatcher=False, pageLength=None):
+def comparison(page, getSeqMatcher=False, pageLength=None):
     if page is None and pageLength is None:
         return None
 
diff --git a/lib/request/connect.py b/lib/request/connect.py
index 0b644ff3e..12635db9c 100644
--- a/lib/request/connect.py
+++ b/lib/request/connect.py
@@ -472,8 +472,8 @@ class Connect:
         if content or response:
             return page, headers
         elif getSeqMatcher:
-            return comparison(page, headers, getSeqMatcher=False, pageLength=pageLength), comparison(page, headers, getSeqMatcher=True, pageLength=pageLength)
+            return comparison(page, getSeqMatcher=False, pageLength=pageLength), comparison(page, getSeqMatcher=True, pageLength=pageLength)
         elif pageLength or page:
-            return comparison(page, headers, getSeqMatcher, pageLength)
+            return comparison(page, getSeqMatcher, pageLength)
         else:
             return False
diff --git a/lib/takeover/web.py b/lib/takeover/web.py
index 0d19493fa..9377a8de5 100644
--- a/lib/takeover/web.py
+++ b/lib/takeover/web.py
@@ -78,6 +78,7 @@ class Web:
 
     def __webFileStreamUpload(self, stream, destFileName, directory):
         stream.seek(0) # Rewind
+        stream.name = destFileName
 
         if self.webApi in ("php", "asp", "aspx", "jsp"):
             multipartParams = {
diff --git a/lib/techniques/inband/union/use.py b/lib/techniques/inband/union/use.py
index 65295a018..4bdf0aa7d 100644
--- a/lib/techniques/inband/union/use.py
+++ b/lib/techniques/inband/union/use.py
@@ -31,7 +31,7 @@ from lib.utils.resume import resume
 
 reqCount = 0
 
-def unionUse(expression, direct=False, unescape=True, resetCounter=False, nullChar=None, unpack=True, dump=False):
+def unionUse(expression, direct=False, unescape=True, resetCounter=False, unpack=True, dump=False):
     """
     This function tests for an inband SQL injection on the target
     url then call its subsidiary function to effectively perform an
diff --git a/plugins/dbms/mysql/filesystem.py b/plugins/dbms/mysql/filesystem.py
index 99bd5382c..eb2215ea5 100644
--- a/plugins/dbms/mysql/filesystem.py
+++ b/plugins/dbms/mysql/filesystem.py
@@ -92,7 +92,7 @@ class Filesystem(GenericFilesystem):
         logger.debug(debugMsg)
 
         sqlQuery = "%s INTO DUMPFILE '%s'" % (fcEncodedStr, dFile)
-        unionUse(sqlQuery, direct=True, unescape=False, nullChar="''")
+        unionUse(sqlQuery, direct=True, unescape=False)
 
         if confirm:
             self.askCheckWrittenFile(wFile, dFile, fileType)