diff --git a/src/testdir/test_autocmd.vim b/src/testdir/test_autocmd.vim
index ecef5b7..9c996ec 100644
--- a/src/testdir/test_autocmd.vim
+++ b/src/testdir/test_autocmd.vim
@@ -1827,20 +1827,9 @@
   bwipe!
 endfunc
 
-func Test_nocatch_wipe_all_buffers()
-  " Real nasty autocommand: wipe all buffers on any event.
-  au * * bwipe *
-  call assert_fails('next x', ['E94:', 'E937:'])
-  bwipe
-  au!
-endfunc
-
-func Test_nocatch_wipe_dummy_buffer()
-  CheckFeature quickfix
-  " Nasty autocommand: wipe buffer on any event.
-  au * x bwipe
-  call assert_fails('lv½ /x', 'E937:')
-  au!
+func Test_autocommand_all_events()
+  call assert_fails('au * * bwipe', 'E1155:')
+  call assert_fails('au * x bwipe', 'E1155:')
 endfunc
 
 function s:Before_test_dirchanged()
diff --git a/src/testdir/test_quickfix.vim b/src/testdir/test_quickfix.vim
index 8667631..1799f29 100644
--- a/src/testdir/test_quickfix.vim
+++ b/src/testdir/test_quickfix.vim
@@ -3833,7 +3833,7 @@
   sv Xtest
   augroup QF_Test
     au!
-    au * * bw
+    au QuickFixCmdPre,QuickFixCmdPost,BufEnter,BufLeave * bw
   augroup END
   lbuffer
   augroup QF_Test
@@ -3845,7 +3845,7 @@
 func Test_lexpr_crash()
   augroup QF_Test
     au!
-    au * * call setloclist(0, [], 'f')
+    au QuickFixCmdPre,QuickFixCmdPost,BufEnter,BufLeave * call setloclist(0, [], 'f')
   augroup END
   lexpr ""
   augroup QF_Test
@@ -3880,7 +3880,7 @@
   sv Xtest
   augroup QF_Test
     au!
-    au * * call setloclist(0, [], 'f')
+    au QuickFixCmdPre,QuickFixCmdPost,BufEnter,BufLeave * call setloclist(0, [], 'f')
   augroup END
   lvimgrep quickfix test_quickfix.vim
   augroup QF_Test
@@ -4215,7 +4215,7 @@
   new
   new
   augroup nasty
-    au * * bwipe
+    au QuickFixCmdPre,QuickFixCmdPost,BufEnter,BufLeave * bwipe
   augroup END
   lbuffer
   augroup nasty
@@ -4228,9 +4228,9 @@
 func Xexpr_acmd_freelist(cchar)
   call s:setup_commands(a:cchar)
 
-  " This was using freed memory.
+  " This was using freed memory (but with what events?)
   augroup nasty
-    au * * call g:Xsetlist([], 'f')
+    au QuickFixCmdPre,QuickFixCmdPost,BufEnter,BufLeave * call g:Xsetlist([], 'f')
   augroup END
   Xexpr "x"
   augroup nasty
diff --git a/src/testdir/test_window_cmd.vim b/src/testdir/test_window_cmd.vim
index f26b447..07347a3 100644
--- a/src/testdir/test_window_cmd.vim
+++ b/src/testdir/test_window_cmd.vim
@@ -567,8 +567,8 @@
 
 func Test_access_freed_mem()
   call assert_equal(&columns, winwidth(0))
-  " This was accessing freed memory
-  au * 0 vs xxx
+  " This was accessing freed memory (but with what events?)
+  au BufEnter,BufLeave,WinEnter,WinLeave 0 vs xxx
   arg 0
   argadd
   call assert_fails("all", "E242:")