diff --git a/src/testdir/test64.in b/src/testdir/test64.in
index e694995..7a20e18 100644
--- a/src/testdir/test64.in
+++ b/src/testdir/test64.in
@@ -373,6 +373,7 @@
 :call add(tl, [2, '\%x20', 'yes no', ' '])
 :call add(tl, [2, '\%u0020', 'yes no', ' '])
 :call add(tl, [2, '\%U00000020', 'yes no', ' '])
+:call add(tl, [2, '\%d0', "yes\x0ano", "\x0a"])
 :"
 :""""" \%[abc]
 :call add(tl, [2, 'foo\%[bar]', 'fobar'])
diff --git a/src/testdir/test64.ok b/src/testdir/test64.ok
index 3d117b9..53affcd 100644
--- a/src/testdir/test64.ok
+++ b/src/testdir/test64.ok
@@ -863,6 +863,9 @@
 OK 0 - \%U00000020
 OK 1 - \%U00000020
 OK 2 - \%U00000020
+OK 0 - \%d0
+OK 1 - \%d0
+OK 2 - \%d0
 OK 0 - foo\%[bar]
 OK 1 - foo\%[bar]
 OK 2 - foo\%[bar]