diff --git a/Contributing-to-the-Pi-hole-project.md b/Contributing-to-the-Pi-hole-project.md
index c9b0c9d..ec1c873 100644
--- a/Contributing-to-the-Pi-hole-project.md
+++ b/Contributing-to-the-Pi-hole-project.md
@@ -25,4 +25,9 @@ Git even has a `-s` command line option to append this automatically to your com
 
 `$ git commit -s -m 'This is my commit message'`
 
+If you have authored a commit that is missing the `Signed-off by` line, you can amend your commits
+and push them to GitHub
+
+`git commit --amend --signoff`
+
 ![DCO Failed PR](https://cloud.githubusercontent.com/assets/173/24482273/a35dc23e-14b5-11e7-9371-fd241873e2c3.png)