diff --git a/lib/controller/action.py b/lib/controller/action.py
index f2b7fe465..8d185c6d4 100644
--- a/lib/controller/action.py
+++ b/lib/controller/action.py
@@ -54,6 +54,8 @@ def action():
 
     conf.dumper.singleString(conf.dbmsHandler.getFingerprint())
 
+    kb.fingerprinted = True
+
     # Enumeration options
     if conf.getBanner:
         conf.dumper.banner(conf.dbmsHandler.getBanner())
diff --git a/lib/core/option.py b/lib/core/option.py
index fdf288f61..336a20271 100644
--- a/lib/core/option.py
+++ b/lib/core/option.py
@@ -1916,6 +1916,7 @@ def _setKnowledgeBaseAttributes(flushAll=True):
     kb.errorIsNone = True
     kb.falsePositives = []
     kb.fileReadMode = False
+    kb.fingerprinted = False
     kb.followSitemapRecursion = None
     kb.forcedDbms = None
     kb.forcePartialUnion = False
diff --git a/lib/core/settings.py b/lib/core/settings.py
index ab62c4e83..24023a303 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 = "1.4.3.11"
+VERSION = "1.4.3.12"
 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/inject.py b/lib/request/inject.py
index ce9a2c0ec..8c58beaed 100644
--- a/lib/request/inject.py
+++ b/lib/request/inject.py
@@ -499,7 +499,7 @@ def getValue(expression, blind=True, union=True, error=True, time=True, fromUser
 
     kb.safeCharEncode = False
 
-    if not any((kb.testMode, conf.dummy, conf.offline)) and value is None and Backend.getDbms() and conf.dbmsHandler and not conf.noCast and not conf.hexConvert:
+    if not any((kb.testMode, conf.dummy, conf.offline, conf.noCast, conf.hexConvert)) and value is None and Backend.getDbms() and conf.dbmsHandler and kb.fingerprinted:
         warnMsg = "in case of continuous data retrieval problems you are advised to try "
         warnMsg += "a switch '--no-cast' "
         warnMsg += "or switch '--hex'" if hasattr(queries[Backend.getIdentifiedDbms()], "hex") else ""