diff --git a/src/testdir/test_crypt.vim b/src/testdir/test_crypt.vim
index a18dfa3..883c899 100644
--- a/src/testdir/test_crypt.vim
+++ b/src/testdir/test_crypt.vim
@@ -162,8 +162,8 @@
   call assert_equal(range(1, 4000)->map( {_, v -> string(v)}), getline(1,'$'))
   set key=
   w! ++ff=unix
-  " enryption removed
-  call assert_match('"Xcrypt_sodium.txt" 4000L, 18893B written', execute(':message'))
+  " enryption removed (on MS-Windows the .* matches [unix])
+  call assert_match('"Xcrypt_sodium.txt".*4000L, 18893B written', execute(':message'))
   bw!
   call delete('Xcrypt_sodium.txt')
   set cryptmethod&vim