diff --git a/Tools/autotest/param_metadata/param_parse.py b/Tools/autotest/param_metadata/param_parse.py
old mode 100644
new mode 100755
index 817f7d4b2b..8dbee53985
--- a/Tools/autotest/param_metadata/param_parse.py
+++ b/Tools/autotest/param_metadata/param_parse.py
@@ -1,3 +1,5 @@
+#!/usr/bin/env python
+
 import os, glob, re
 
 from param import *
@@ -13,7 +15,7 @@ prog_groups = re.compile(r"@Group:\s*(\w+).*((?:\n\s*//\s*@(\w+): (.*))+)\s*G",
     
 prog_group_param = re.compile(r"@Param:\s*(\w+).*((?:\n\s*//\s*@(\w+): (.*))+)\s*AP_", re.MULTILINE)
 
-prog_values_field = re.compile(r"\s*(\w+:\w+)+,*")
+prog_values_field = re.compile(r"\s*(-?\w+:\w+)+,*")
 
 def camelcase_escape(word):
     if re.match(r"([A-Z][a-z]+[A-Z][a-z]*)", word.strip()):