diff --git a/documentation/contributor-guide/recipe-style-guide.rst b/documentation/contributor-guide/recipe-style-guide.rst
index 08d8fb4259..142c02db1f 100644
--- a/documentation/contributor-guide/recipe-style-guide.rst
+++ b/documentation/contributor-guide/recipe-style-guide.rst
@@ -409,3 +409,15 @@ This should be the header of patch that fixes :cve:`2015-8370` in GRUB2::
    Upstream-Status: Backport [http://git.savannah.gnu.org/cgit/grub.git/commit/?id=451d80e52d851432e109771bb8febafca7a5f1f2]
    CVE: CVE-2015-8370
    Signed-off-by: Joe Developer <joe.developer@example.com>
+
+Patch format
+============
+
+By default, patches created with ``git format-patch`` have a `Git` version signature at the end.
+To avoid having a `Git` signature at the end of generated or updated patches,
+you can use `Git` configuration settings::
+
+   git config --global format.signature ""
+
+.. note::
+   Patches generated or updated by ``devtool`` are created with no signature.