1 files changed, 1 insertions, 1 deletions

diff --git a/test/src/fns-tests.el b/test/src/fns-tests.el
index 0321b92d0bc..6f79d3277a8 100644
--- a/test/src/fns-tests.el
+++ b/test/src/fns-tests.el
@@ -254,7 +254,7 @@
   (should (string-collate-equalp "xyzzy" "XYZZY" nil t))
 
   ;; Locale must be valid.
-  (should-error (string-collate-equalp "xyzzy" "xyzzy" "en_DE.UTF-8")))
+  (should-error (string-collate-equalp "xyzzy" "xyzzy" "en_XY.UTF-8")))
 
 ;; There must be a check for valid codepoints.  (Check not implemented yet)
 ;  (should-error