diff --git a/OscCommentMacroListener.py b/OscCommentMacroListener.py
index d596f68..296d461 100644
--- a/OscCommentMacroListener.py
+++ b/OscCommentMacroListener.py
@@ -1,6 +1,20 @@
 #!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 
+"""OscCommentMacroListener.py: Hog 4 comment macro antlr4 listener for OSC."""
+
+__author__ = "Kevin Matz"
+__copyright__ = "Copyright 2018, Company 235, LLC"
+__credits__ = ["Kevin Matz"]
+
+__license__ = "MIT"
+__version__ = "0.0.1"
+__maintainer__ = "Kevin Matz"
+__email__ = "kevin@company235.com"
+
+__status__ = "Prototype"
+
+
 import antlr4
 from CommentMacroParser import CommentMacroParser
 from CommentMacroListener import CommentMacroListener
@@ -202,6 +216,7 @@ class OscCommentMacroListener(CommentMacroListener):
     def enterMacro(self, ctx: CommentMacroParser.MacroContext):
         ctx.device = None
         ctx.number = None
+        ctx.master = None
         ctx.targets = []
         ctx.time = None