diff --git a/extra/vulnserver/vulnserver.py b/extra/vulnserver/vulnserver.py
index f38728838..458e90bc3 100644
--- a/extra/vulnserver/vulnserver.py
+++ b/extra/vulnserver/vulnserver.py
@@ -98,6 +98,7 @@ class ReqHandler(BaseHTTPRequestHandler):
 
             if "<script>" in unquote_plus(query):
                 self.send_response(INTERNAL_SERVER_ERROR)
+                self.send_header("X-Powered-By", "Express")
                 self.send_header("Connection", "close")
                 self.end_headers()
                 self.wfile.write("CLOUDFLARE_ERROR_500S_BOX".encode(UNICODE_ENCODING))
diff --git a/lib/core/settings.py b/lib/core/settings.py
index 124b0bfd0..30c479510 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 = "1.5.1.38"
+VERSION = "1.5.1.39"
 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/core/testing.py b/lib/core/testing.py
index 164de8abe..d44517bb5 100644
--- a/lib/core/testing.py
+++ b/lib/core/testing.py
@@ -46,7 +46,7 @@ def vulnTest():
         ("--dummy", ("all tested parameters do not appear to be injectable", "does not seem to be injectable", "there is not at least one", "~might be injectable")),
         ("-u '<url>&id2=1' -p id2 -v 5 --flush-session --level=5 --test-filter='AND boolean-based blind - WHERE or HAVING clause (MySQL comment)'", ("~1AND",)),
         ("--list-tampers", ("between", "MySQL", "xforwardedfor")),
-        ("-r <request> --flush-session -v 5 --test-skip='heavy' --save=<config>", ("CloudFlare", "possible DBMS: 'SQLite'", "User-agent: foobar", "~Type: time-based blind", "saved command line options to the configuration file")),
+        ("-r <request> --flush-session -v 5 --test-skip='heavy' --save=<config>", ("CloudFlare", "web application technology: Express", "possible DBMS: 'SQLite'", "User-agent: foobar", "~Type: time-based blind", "saved command line options to the configuration file")),
         ("-c <config>", ("CloudFlare", "possible DBMS: 'SQLite'", "User-agent: foobar", "~Type: time-based blind")),
         ("<piped> -r <request> -l <log> --flush-session --banner --technique=B", ("banner: '3.", "STDIN")),
         ("-l <log> --flush-session --keep-alive --skip-waf -v 5 --technique=U --union-from=users --banner --parse-errors", ("banner: '3.", "ORDER BY term out of range", "~xp_cmdshell", "Connection: keep-alive")),
diff --git a/lib/parse/headers.py b/lib/parse/headers.py
index a496e0c97..24999539e 100644
--- a/lib/parse/headers.py
+++ b/lib/parse/headers.py
@@ -11,7 +11,6 @@ from lib.core.common import parseXmlFile
 from lib.core.data import kb
 from lib.core.data import paths
 from lib.parse.handler import FingerprintHandler
-from thirdparty.six.moves import filter as _filter
 
 def headersParser(headers):
     """
@@ -30,7 +29,7 @@ def headersParser(headers):
             "x-powered-by": os.path.join(paths.SQLMAP_XML_BANNER_PATH, "x-powered-by.xml"),
         }
 
-    for header in _filter(lambda _: _ in kb.headerPaths, headers):
+    for header in (_.lower() for _ in headers if _.lower() in kb.headerPaths):
         value = headers[header]
         xmlfile = kb.headerPaths[header]
         handler = FingerprintHandler(value, kb.headersFp)