diff --git a/src/testdir/test_timers.vim b/src/testdir/test_timers.vim
index dc01d84..f40213d 100644
--- a/src/testdir/test_timers.vim
+++ b/src/testdir/test_timers.vim
@@ -152,7 +152,7 @@
   let g:timer2 = timer_start(10, 'StopTimer2')
   " avoid maxfuncdepth error
   call timer_pause(g:timer1, 1)
-  sleep 40m
+  sleep 20m
 endfunc
 
 func StopTimer2(timer)
@@ -162,7 +162,7 @@
 func Test_timer_stop_in_callback()
   call assert_equal(0, len(timer_info()))
   let g:timer1 = timer_start(10, 'StopTimer1')
-  sleep 40m
+  sleep 50m
   call assert_equal(0, len(timer_info()))
 endfunc