diff --git a/src/testdir/test61.in b/src/testdir/test61.in
index 749d8ad..7ce72e6 100644
--- a/src/testdir/test61.in
+++ b/src/testdir/test61.in
@@ -43,6 +43,13 @@
 :.w >>test.out
 :later 1h
 :.w >>test.out
+:"
+:" test undojoin
+Goaaaa:set ul=100
+obbbbu:.w >>test.out
+obbbb:set ul=100
+:undojoin
+occccu:.w >>test.out
 :qa!
 ENDTEST
 
diff --git a/src/testdir/test61.ok b/src/testdir/test61.ok
index c23fe22..020dd53 100644
--- a/src/testdir/test61.ok
+++ b/src/testdir/test61.ok
@@ -20,3 +20,5 @@
 123456789
 123456
 123456abc
+aaaa
+aaaa