diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index c32c702f2..ae341abc9 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -10,11 +10,9 @@ simple guidelines.
 
       // Return the current UNIX time.
 
-* Make sure all commits are signed off, using `git commit -s`.
 * Sign all your comments with your public key, using `git commit -S`.
 * Follow the guidelines when proposing code changes (see below).
 * Write properly formatted git commits (see below).
-* Read the DCO.
 
 Proposing changes
 -----------------
diff --git a/DCO b/DCO
deleted file mode 100644
index 69175c983..000000000
--- a/DCO
+++ /dev/null
@@ -1,28 +0,0 @@
-Developer's Certificate of Origin 1.1
-Copyright © 2004, 2006 The Linux Foundation and its contributors.
-
----
-
-By making a contribution to this project, I certify that:
-
-(a) The contribution was created in whole or in part by me and I
-    have the right to submit it under the open source license
-    indicated in the file; or
-
-(b) The contribution is based upon previous work that, to the best
-    of my knowledge, is covered under an appropriate open source
-    license and I have the right under that license to submit that
-    work with modifications, whether created in whole or in part
-    by me, under the same open source license (unless I am
-    permitted to submit under a different license), as indicated
-    in the file; or
-
-(c) The contribution was provided directly to me by some other
-    person who certified (a), (b) or (c) and I have not modified
-    it.
-
-(d) I understand and agree that this project and the contribution
-    are public and that a record of the contribution (including all
-    personal information I submit with it, including my sign-off) is
-    maintained indefinitely and may be redistributed consistent with
-    this project or the open source license(s) involved.