diff --git a/scripts/genrgb.py b/scripts/genrgb.py
index 45fe911ed..2c7bbaf9e 100755
--- a/scripts/genrgb.py
+++ b/scripts/genrgb.py
@@ -1,5 +1,7 @@
 #!/usr/bin/python
 
+# Data is from /usr/share/X11/rgb.txt
+
 import sys
 from collections import OrderedDict