diff --git a/debian/README.source b/debian/README.source
index 0d604ce5c..39894e003 100644
--- a/debian/README.source
+++ b/debian/README.source
@@ -43,8 +43,16 @@ unifdef packages installed.
    This will produce ../orig/linux_<version>.orig.tar.xz
    (e.g. linux_3.5~rc1.orig.tar.xz).
 
+   It involves applying several patches and file deletions for DFSG
+   compliance, as listed in debian/patches/series-orig.  Occasionally
+   you will need to refresh these.
+
 3) Run: make -f debian/rules orig
 
+   This will apply the main quilt series to the upstream source, which
+   will usually fail due to conflicts with upstream changes.  You need
+   to resolve those by dropping or refreshing patches.
+
 Applying patches to the Debian kernel tree
 ==========================================