diff --git a/src/testdir/test_timers.vim b/src/testdir/test_timers.vim
index fb35f61..f334c17 100644
--- a/src/testdir/test_timers.vim
+++ b/src/testdir/test_timers.vim
@@ -27,7 +27,7 @@
   let timer = timer_start(50, 'MyHandler', {'repeat': 3})
   let slept = WaitFor('g:val == 3')
   call assert_equal(3, g:val)
-  call assert_inrange(100, 250, slept)
+  call assert_inrange(80, 200, slept)
 endfunc
 
 func Test_repeat_many()