diff --git a/lib/core/option.py b/lib/core/option.py
index 7726f056e..6b15dc681 100644
--- a/lib/core/option.py
+++ b/lib/core/option.py
@@ -71,6 +71,7 @@ from lib.core.exception import sqlmapSyntaxException
 from lib.core.exception import sqlmapUnsupportedDBMSException
 from lib.core.exception import sqlmapUserQuitException
 from lib.core.optiondict import optDict
+from lib.core.settings import CODECS_LIST_PAGE
 from lib.core.settings import DEFAULT_PAGE_ENCODING
 from lib.core.settings import IS_WIN
 from lib.core.settings import PLATFORM
@@ -1641,7 +1642,7 @@ def __basicOptionValidation():
             codecs.lookup(conf.charset)
         except LookupError:
             errMsg  = "unknown charset '%s'. please visit page " % conf.charset
-            errMsg += "'http://docs.python.org/library/codecs.html#standard-encodings' "
+            errMsg += "'%s' " % CODECS_LIST_PAGE
             errMsg += "to get the full list of supported charsets"
             raise sqlmapSyntaxException, errMsg
 
diff --git a/lib/core/settings.py b/lib/core/settings.py
index 209d3e20e..e9cca1b53 100644
--- a/lib/core/settings.py
+++ b/lib/core/settings.py
@@ -330,3 +330,6 @@ TURN_OFF_RESUME_INFO_LIMIT = 20
 
 # Strftime format for results file used in multiple target mode
 RESULTS_FILE_FORMAT = 'results-%I%M%p_%m%d%Y.csv'
+
+# Official web page with the list of Python supported codecs
+CODECS_LIST_PAGE = 'http://docs.python.org/library/codecs.html#standard-encodings'