diff --git a/lib/core/option.py b/lib/core/option.py
index 3fdd10c40..6500bed8c 100644
--- a/lib/core/option.py
+++ b/lib/core/option.py
@@ -2652,7 +2652,7 @@ def _mergeOptions(inputOptions, overrideOptions):
         inputOptionsItems = inputOptions.__dict__.items()
 
     for key, value in inputOptionsItems:
-        if key not in conf or value not in (None, False) or overrideOptions:
+        if key not in conf or (value is not None and value is not False) or overrideOptions:  # Note: explicit zero (e.g. '--delay 0') has to win over the configuration file
             conf[key] = value
 
     if not conf.api:
diff --git a/lib/core/settings.py b/lib/core/settings.py
index 0d94c655b..7caa61073 100644
--- a/lib/core/settings.py
+++ b/lib/core/settings.py
@@ -19,7 +19,7 @@ from lib.core.enums import OS
 from thirdparty import six
 
 # sqlmap version (<major>.<minor>.<month>.<monthly commit>)
-VERSION = "1.10.11.46"
+VERSION = "1.10.11.47"
 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)