diff --git a/.gitignore b/.gitignore
index 74d1a6205493ff7029183b2f7dfb49b2f572eb9c..01697a40ca98c0cde4163dcf0ed8d8e5608cdf4e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
+#Run git rm -rf --cached . ,then git add, git commit, and git push.
 archived/
 debugging/
 V2.2/ODA/