diff --git a/src/testdir/test72.in b/src/testdir/test72.in
index 6acb6d8..220adad 100644
--- a/src/testdir/test72.in
+++ b/src/testdir/test72.in
@@ -51,6 +51,12 @@
 :e Xtestfile
 uuu:w >>test.out
 :"
+:" Test that reading the undofiles when setting undofile works
+:set noundofile ul=0
+i
+u:e! Xtestfile
+:set undofile ul=100
+uuuuuu:w >>test.out
 :" And now with encryption, cryptmethod=zip
 :e! Xtestfile
 :set undofile cm=zip
diff --git a/src/testdir/test72.ok b/src/testdir/test72.ok
index 44210c9..bb267d0 100644
--- a/src/testdir/test72.ok
+++ b/src/testdir/test72.ok
@@ -7,6 +7,16 @@
 eight
 nine
 ten
+one
+two
+three
+four
+five
+six
+seven
+eight
+nine
+ten
 monday
 wednesday
 thursday