diff --git a/lib/core/agent.py b/lib/core/agent.py
index 7fd836512..a7b52ac47 100644
--- a/lib/core/agent.py
+++ b/lib/core/agent.py
@@ -789,7 +789,6 @@ class Agent(object):
             elif fieldsNoSelect:
                 concatenatedQuery = "CONCAT(CONCAT('%s',%s),'%s')" % (kb.chars.start, concatenatedQuery, kb.chars.stop)
 
-
         return concatenatedQuery
 
     def forgeUnionQuery(self, query, position, count, comment, prefix, suffix, char, where, multipleUnions=None, limited=False, fromTable=None):
diff --git a/lib/core/settings.py b/lib/core/settings.py
index 44471302b..7cc837eaf 100644
--- a/lib/core/settings.py
+++ b/lib/core/settings.py
@@ -18,7 +18,7 @@ from lib.core.enums import OS
 from thirdparty.six import unichr as _unichr
 
 # sqlmap version (<major>.<minor>.<month>.<monthly commit>)
-VERSION = "1.4.11.12"
+VERSION = "1.4.11.13"
 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 3d6362d4a..c904f70f9 100644
--- a/lib/techniques/blind/inference.py
+++ b/lib/techniques/blind/inference.py
@@ -123,10 +123,7 @@ def bisection(payload, expression, length=None, charsetType=None, firstChar=None
             payload = payload.replace("SUBSTRING", "(SELECT%sSUBSTRING" % (match.group(1) if match.group(1) else " "), 1)
             expression = match.group(2).strip()
 
-
-#<inference query="(SELECT SUBSTRING((%s) FROM %d FOR 1) FROM %s)>'%c'"/>
-
-    try:
+   try:
         # Set kb.partRun in case "common prediction" feature (a.k.a. "good samaritan") is used or the engine is called from the API
         if conf.predictOutput:
             kb.partRun = getPartRun()
diff --git a/plugins/dbms/hsqldb/fingerprint.py b/plugins/dbms/hsqldb/fingerprint.py
index 3b0bfb033..c2964689c 100644
--- a/plugins/dbms/hsqldb/fingerprint.py
+++ b/plugins/dbms/hsqldb/fingerprint.py
@@ -145,12 +145,9 @@ class Fingerprint(GenericFingerprint):
         warnMsg = "on HSQLDB it is not possible to enumerate the hostname"
         logger.warn(warnMsg)
 
-
     def checkDbmsOs(self, detailed=False):
         if Backend.getOs():
             infoMsg = "the back-end DBMS operating system is %s" % Backend.getOs()
             logger.info(infoMsg)
         else:
             self.userChooseDbmsOs()
-
-