diff --git a/git-rebase.sh b/git-rebase.sh
index a7373c0532..413636e208 100755
--- a/git-rebase.sh
+++ b/git-rebase.sh
@@ -286,7 +286,7 @@ fi
 
 if test -z "$do_merge"
 then
-	git-format-patch -k --stdout --full-index "$upstream"..ORIG_HEAD |
+	git-format-patch -k --stdout --full-index --ignore-if-in-upstream "$upstream"..ORIG_HEAD |
 	git am --binary -3 -k --resolvemsg="$RESOLVEMSG" \
 		--reflog-action=rebase
 	exit $?