diff --git a/lib/core/settings.py b/lib/core/settings.py
index 7d55d1e0f..29b5481c8 100644
--- a/lib/core/settings.py
+++ b/lib/core/settings.py
@@ -18,7 +18,7 @@ from lib.core.enums import OS
 from thirdparty import six
 
 # sqlmap version (<major>.<minor>.<month>.<monthly commit>)
-VERSION = "1.3.5.72"
+VERSION = "1.3.5.73"
 TYPE = "dev" if VERSION.count('.') > 2 and VERSION.split('.')[-1] != '0' else "stable"
 TYPE_COLORS = {"dev": 33, "stable": 90, "pip": 34}
 VERSION_STRING = "sqlmap/%s#%s" % ('.'.join(VERSION.split('.')[:-1]) if VERSION.count('.') > 2 and VERSION.split('.')[-1] == '0' else VERSION, TYPE)
diff --git a/lib/techniques/blind/inference.py b/lib/techniques/blind/inference.py
index 35daec8b7..79b89f344 100644
--- a/lib/techniques/blind/inference.py
+++ b/lib/techniques/blind/inference.py
@@ -379,7 +379,7 @@ def bisection(payload, expression, length=None, charsetType=None, firstChar=None
                                 charTbl = xrange(maxChar + 1, (maxChar + 1) << shiftTable.pop())
                                 originalTbl = xrange(charTbl)
                                 maxChar = maxValue = charTbl[-1]
-                                minChar = minValue = charTbl[0]
+                                minValue = charTbl[0]
                             else:
                                 return None
                         else:
diff --git a/lib/utils/purge.py b/lib/utils/purge.py
index 15146fcff..58649bd3b 100644
--- a/lib/utils/purge.py
+++ b/lib/utils/purge.py
@@ -15,7 +15,6 @@ import string
 from lib.core.common import getSafeExString
 from lib.core.compat import xrange
 from lib.core.data import logger
-from thirdparty import six
 
 def purge(directory):
     """