diff --git a/lib/core/common.py b/lib/core/common.py
index a6d9acaad..39b314f60 100644
--- a/lib/core/common.py
+++ b/lib/core/common.py
@@ -2895,7 +2895,7 @@ def urldecode(value, encoding=None, unsafe="%%?&=;+%s" % CUSTOM_INJECTION_MARK_C
             if spaceplus:
                 result = result.replace('+', ' ')  # plus sign has a special meaning in URL encoded data (hence the usage of _urllib.parse.unquote_plus in convall case)
 
-            result = re.sub(r"%([0-9a-fA-F]{2})", _, result)
+            result = re.sub(r"%([0-9a-fA-F]{2})", _, result or "")
 
         result = getUnicode(result, encoding or UNICODE_ENCODING)
 
diff --git a/lib/core/settings.py b/lib/core/settings.py
index ffbaa53dd..a7e22a9ba 100644
--- a/lib/core/settings.py
+++ b/lib/core/settings.py
@@ -20,7 +20,7 @@ from thirdparty import six
 from thirdparty.six import unichr as _unichr
 
 # sqlmap version (<major>.<minor>.<month>.<monthly commit>)
-VERSION = "1.5.10.14"
+VERSION = "1.5.10.15"
 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)