diff --git a/src/modules/systemlib/mixer/multi_tables b/src/modules/systemlib/mixer/multi_tables
index 786b63b023..46dfc5bffc 100755
--- a/src/modules/systemlib/mixer/multi_tables
+++ b/src/modules/systemlib/mixer/multi_tables
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #
 # Generate multirotor mixer scale tables compatible with the ArduCopter layout
 #
@@ -6,9 +6,12 @@
 import math
 
 print "/*"
-print "* These file is automatically generated by multi_tables.py - do not edit."
+print "* This file is automatically generated by multi_tables.py - do not edit."
 print "*/"
 print ""
+print "#ifndef _MIXER_MULTI_TABLES"
+print "#define _MIXER_MULTI_TABLES"
+print ""
 
 def rcos(angleInRadians):
   return math.cos(math.radians(angleInRadians))
@@ -157,3 +160,5 @@ printScaleTablesIndex()
 printScaleTablesCounts()
 
 print "} // anonymous namespace\n"
+print "#endif /* _MIXER_MULTI_TABLES */"
+print ""