diff --git a/cfg_checker/common/exception.py b/cfg_checker/common/exception.py
index 157c466..8e8b818 100644
--- a/cfg_checker/common/exception.py
+++ b/cfg_checker/common/exception.py
@@ -12,22 +12,22 @@
         # TODO: get and log traceback
 
         # prettify message
-        self.message = "CheckerException: {}".format(message)
+        self.message = "# CheckerException: {}".format(message)
 
 
 class ConfigException(CheckerException):
     def __init__(self, message, *args, **kwargs):
         super(ConfigException, self).__init__(message, *args, **kwargs)
-        self.message = "Configuration error: {}".format(message)
+        self.message = "# Configuration error: {}".format(message)
 
 
 class SaltException(CheckerException):
     def __init__(self, message, *args, **kwargs):
         super(SaltException, self).__init__(message, *args, **kwargs)
-        self.message = "Salt error: {}".format(message)
+        self.message = "# Salt error: {}".format(message)
 
 
 class InvalidReturnException(CheckerException):
     def __init__(self, message, *args, **kwargs):
         super(InvalidReturnException, self).__init__(message, *args, **kwargs)
-        self.message = "Unexpected return value: {}".format(message)
+        self.message = "# Unexpected return value: {}".format(message)