diff --git a/src/testdir/test72.in b/src/testdir/test72.in
index a5674b5..b6c6bfa 100644
--- a/src/testdir/test72.in
+++ b/src/testdir/test72.in
@@ -49,6 +49,55 @@
 :e Xtestfile
 uuu:w >>test.out
 :"
+:" And now with encryption, cryptmethod=0
+:e! Xtestfile
+:set undofile cm=0
+ggdG
+imonday
+tuesday
+wednesday
+thursday
+friday:set ul=100
+kkkdd:set ul=100
+dd:set ul=100
+dd:set ul=100
+:X
+foobar
+foobar
+:w!
+:bwipe!
+:e Xtestfile
+foobar
+:set key=
+uu:w >>test.out
+:"
+:"
+:" With encryption, cryptmethod=1
+:e! Xtestfile
+:set undofile cm=1
+ggdG
+ijan
+feb
+mar
+apr
+jun:set ul=100
+kk0ifoo :set ul=100
+dd:set ul=100
+ibar :set ul=100
+:X
+foobar
+foobar
+:w!
+:bwipe!
+:e Xtestfile
+foobar
+:set key=
+/bar
+:.w >>test.out
+u:.w >>test.out
+u:.w >>test.out
+u:.w >>test.out
+:"
 :" Rename the undo file so that it gets cleaned up.
 :call rename(".Xtestfile.un~", "Xtestundo")
 :qa!