diff --git a/copy-patches.sh b/copy-patches.sh
index 85cf20a..935c7d4 100755
--- a/copy-patches.sh
+++ b/copy-patches.sh
@@ -36,7 +36,7 @@ git rm -f [0-9]*.patch ||:
 rm -f [0-9]*.patch
 
 # Get the patches.
-(cd $git_checkout; rm -f [0-9]*.patch; git -c core.abbrev=9 format-patch -O/dev/null -N --submodule=diff $tag)
+(cd $git_checkout; rm -f [0-9]*.patch; git -c core.abbrev=8 format-patch -O/dev/null --subject-prefix=PATCH -N --submodule=diff $tag)
 mv $git_checkout/[0-9]*.patch .
 
 # Remove any not to be applied.