diff --git a/README.md b/README.md
index 76590bb823771d3bafc434fde65e9a25051ffd93..f1ba0f8d72128bbfe6aff4d9ead0e067ecaafde6 100644
--- a/README.md
+++ b/README.md
@@ -23,6 +23,11 @@ Overview of EGRET:  The following are 4 major features of EGRET.
 Please visit the EGRET wiki for more information:
 [EGRET Wiki](https://github.com/USGS-CIDA/WRTDS/wiki)
 
+Disclaimer
+----------
+This software is in the public domain because it contains materials that originally came from the United States Geological Survey, an agency of the United States Department of Interior. For more information, see the official USGS copyright policy at [http://www.usgs.gov/visual-id/credit_usgs.html#copyright](http://www.usgs.gov/visual-id/credit_usgs.html#copyright)
+
+This software is provided "AS IS".
 
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