diff --git a/test/lisp/net/tramp-tests.el b/test/lisp/net/tramp-tests.el
index 180f746c64..42d44f780b 100644
--- a/test/lisp/net/tramp-tests.el
+++ b/test/lisp/net/tramp-tests.el
@@ -5459,7 +5459,8 @@ tramp--test-utf8
   (skip-unless (not (tramp--test-windows-nt-and-batch)))
   (skip-unless (not (tramp--test-windows-nt-and-pscp-psftp-p)))

-  (tramp--test-utf8))
+  (tramp--test-instrument-test-case 10
+  (tramp--test-utf8)))

 (ert-deftest tramp-test41-utf8-with-stat ()
   "Check UTF8 encoding in file names and file contents.