diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 359106b49f..783c8273f7 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -131,7 +131,7 @@ e. I hereby grant to the Project, Docker, Inc and its successors;  and recipient
 
 then you just add a line saying
 
-    Docker-DCO-1.0-Signed-off-by: Joe Smith <joe.smith@email.com> @github_handle
+    Docker-DCO-1.0-Signed-off-by: Joe Smith <joe.smith@email.com> (github: github_handle)
 
 using your real name (sorry, no pseudonyms or anonymous contributions.)