diff --git a/lib/core/agent.py b/lib/core/agent.py
index d3f4eedc7..cffc043a6 100644
--- a/lib/core/agent.py
+++ b/lib/core/agent.py
@@ -188,8 +188,10 @@ class Agent(object):
             else:
                 newValue = self.addPayloadDelimiters(newValue)
 
-            newValue = newValue.replace(kb.customInjectionMark, REPLACEMENT_MARKER)
-            retVal = paramString.replace(_, newValue)
+            if newValue:
+                newValue = newValue.replace(kb.customInjectionMark, REPLACEMENT_MARKER)
+                retVal = paramString.replace(_, newValue)
+
             retVal = retVal.replace(kb.customInjectionMark, "").replace(REPLACEMENT_MARKER, kb.customInjectionMark)
         elif BOUNDED_INJECTION_MARKER in paramDict[parameter]:
             retVal = paramString.replace("%s%s" % (origValue, BOUNDED_INJECTION_MARKER), self.addPayloadDelimiters(newValue))
diff --git a/lib/core/settings.py b/lib/core/settings.py
index 57acad4c1..8d076d46b 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 = "1.4.1.46"
+VERSION = "1.4.1.47"
 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)