diff --git a/lib/core/settings.py b/lib/core/settings.py
index 931dafe3d..9a19b7f69 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 = "1.4.12.12"
+VERSION = "1.4.12.13"
 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/request/basic.py b/lib/request/basic.py
index e157156c9..ca9f70ea2 100644
--- a/lib/request/basic.py
+++ b/lib/request/basic.py
@@ -395,7 +395,7 @@ def processResponse(page, responseHeaders, code=None, status=None):
             logger.warning("parsed DBMS error message: '%s'" % msg.rstrip('.'))
 
     if not conf.skipWaf and kb.processResponseCounter < IDENTYWAF_PARSE_LIMIT:
-        rawResponse = "%s %s %s\n%s\n%s" % (getUnicode(_http_client.HTTPConnection._http_vsn_str), getUnicode(code or ""), getUnicode(status or ""), getUnicode("".join(responseHeaders.headers if responseHeaders else [])), getUnicode(page))
+        rawResponse = "%s %s %s\n%s\n%s" % (_http_client.HTTPConnection._http_vsn_str, code or "", status or "", "".join(getUnicode(responseHeaders.headers if responseHeaders else [])), page)
 
         identYwaf.non_blind.clear()
         if identYwaf.non_blind_check(rawResponse, silent=True):
diff --git a/lib/request/connect.py b/lib/request/connect.py
index d697f8a31..2177eef2b 100644
--- a/lib/request/connect.py
+++ b/lib/request/connect.py
@@ -707,7 +707,7 @@ class Connect(object):
             responseMsg += "[#%d] (%s %s):\r\n" % (threadData.lastRequestUID, code, status)
 
             if responseHeaders:
-                logHeaders = getUnicode("".join(responseHeaders.headers).strip())
+                logHeaders = "".join(getUnicode(responseHeaders.headers)).strip()
 
             logHTTPTraffic(requestMsg, "%s%s\r\n\r\n%s" % (responseMsg, logHeaders, (page or "")[:MAX_CONNECTION_READ_SIZE]), start, time.time())
 
@@ -887,7 +887,7 @@ class Connect(object):
                 responseMsg += "[#%d] (%s %s):\r\n" % (threadData.lastRequestUID, code, status)
 
             if responseHeaders:
-                logHeaders = getUnicode("".join(responseHeaders.headers).strip())
+                logHeaders = "".join(getUnicode(responseHeaders.headers)).strip()
 
             logHTTPTraffic(requestMsg, "%s%s\r\n\r\n%s" % (responseMsg, logHeaders, (page or "")[:MAX_CONNECTION_READ_SIZE]), start, time.time())