diff --git a/client/configreader.py b/client/configreader.py
index 96aab5f3..470f029f 100644
--- a/client/configreader.py
+++ b/client/configreader.py
@@ -112,7 +112,7 @@ class ConfigReader(SafeConfigParserWithIncludes):
 			except NoSectionError, e:
 				# No "Definition" section or wrong basedir
 				logSys.error(e)
-				values[option[1]] = option[2]
+				return False
 			except NoOptionError:
 				if not option[2] is None:
 					logSys.warn("'%s' not defined in '%s'. Using default one: %r"
diff --git a/client/jailreader.py b/client/jailreader.py
index 1b5bf1ae..d7c7b84c 100644
--- a/client/jailreader.py
+++ b/client/jailreader.py
@@ -54,7 +54,7 @@ class JailReader(ConfigReader):
 		return ConfigReader.read(self, "jail")
 	
 	def isEnabled(self):
-		return self.__force_enable or self.__opts["enabled"]
+		return self.__force_enable or ( self.__opts and self.__opts["enabled"] )
 
 	@staticmethod
 	def _glob(path):
@@ -84,6 +84,8 @@ class JailReader(ConfigReader):
 				["string", "filter", ""],
 				["string", "action", ""]]
 		self.__opts = ConfigReader.getOptions(self, self.__name, opts)
+		if not self.__opts:
+			return False
 		
 		if self.isEnabled():
 			# Read filter