diff --git a/README.md b/README.md
index b70ad08..3c7e25d 100644
--- a/README.md
+++ b/README.md
@@ -30,7 +30,7 @@ sed -i 's/JSONB DEFAULT \[\]/\jsonb DEFAULT \x27\[\]\x27/g' changelog-dir/diff-c
 sed -i 's/\x220001-01-01T00:00:00+00:00\x22/\x27\[\x220001-01-01T00:00:00+00:00\x22\]\x27/g' changelog-dir/diff-changelog/*.sql
 sed -i 's/JSONB DEFAULT \x7B\x7D/\jsonb DEFAULT \x27\x7B\x7D\x27\x3A\x3Ajsonb/g' changelog-dir/diff-changelog/*.sql
 sed -i 's/JSONB DEFAULT \[\]/\jsonb DEFAULT \x27\[\]\x27\x3A\x3Ajsonb/g' changelog-dir/diff-changelog/*.sql
-sed -i 's/\x3F\x3F/\x3F' changelog-dir/diff-changelog/*.sql
+sed -i 's/\x3F/\x3F\x3F/g' changelog-dir/diff-changelog/*.sql
 ```
 * 2.2. asdasdasd
 ```shell