diff --git a/lib/core/settings.py b/lib/core/settings.py
index 36e259998..7860818d2 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 = "1.5.1.19"
+VERSION = "1.5.1.20"
 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/plugins/generic/databases.py b/plugins/generic/databases.py
index 86853c58e..58ee2fb00 100644
--- a/plugins/generic/databases.py
+++ b/plugins/generic/databases.py
@@ -540,7 +540,7 @@ class Databases(object):
 
             elif Backend.getIdentifiedDbms() in (DBMS.ACCESS, DBMS.MCKOI, DBMS.EXTREMEDB, DBMS.RAIMA):
                 warnMsg = "cannot retrieve column names, "
-                warnMsg += "back-end DBMS is '%s'" % Backend.getIdentifiedDbms()
+                warnMsg += "back-end DBMS is %s" % Backend.getIdentifiedDbms()
                 singleTimeWarnMessage(warnMsg)
                 bruteForce = True