diff --git a/src/testdir/test_arglist.vim b/src/testdir/test_arglist.vim
index 298514e..1bc556f 100644
--- a/src/testdir/test_arglist.vim
+++ b/src/testdir/test_arglist.vim
@@ -587,8 +587,6 @@
 
 " Test for ":all" not working when in the cmdline window
 func Test_all_not_allowed_from_cmdwin()
-  CheckFeature cmdwin
-
   au BufEnter * all
   next x
   " Use try/catch here, somehow assert_fails() doesn't work on MS-Windows
diff --git a/src/testdir/test_autocmd.vim b/src/testdir/test_autocmd.vim
index 70f0f55..3698fd5 100644
--- a/src/testdir/test_autocmd.vim
+++ b/src/testdir/test_autocmd.vim
@@ -2778,7 +2778,6 @@
 
 func Test_autocmd_CmdWinEnter()
   CheckRunVimInTerminal
-  CheckFeature cmdwin
 
   let lines =<< trim END
     augroup vimHints | au! | augroup END
@@ -3418,19 +3417,17 @@
     call assert_equal(5, g:nori_to_any)
   endif
 
-  if has('cmdwin')
-    let g:n_to_c = 0
-    au ModeChanged n:c let g:n_to_c += 1
-    let g:c_to_n = 0
-    au ModeChanged c:n let g:c_to_n += 1
-    let g:mode_seq += ['c', 'n', 'c', 'n']
-    call feedkeys("q:\<C-C>\<Esc>", 'tnix')
-    call assert_equal(len(g:mode_seq) - 1, g:index)
-    call assert_equal(2, g:n_to_c)
-    call assert_equal(2, g:c_to_n)
-    unlet g:n_to_c
-    unlet g:c_to_n
-  endif
+  let g:n_to_c = 0
+  au ModeChanged n:c let g:n_to_c += 1
+  let g:c_to_n = 0
+  au ModeChanged c:n let g:c_to_n += 1
+  let g:mode_seq += ['c', 'n', 'c', 'n']
+  call feedkeys("q:\<C-C>\<Esc>", 'tnix')
+  call assert_equal(len(g:mode_seq) - 1, g:index)
+  call assert_equal(2, g:n_to_c)
+  call assert_equal(2, g:c_to_n)
+  unlet g:n_to_c
+  unlet g:c_to_n
 
   au! ModeChanged
   delfunc TestMode
diff --git a/src/testdir/test_cmdwin.vim b/src/testdir/test_cmdwin.vim
index dc68894..ad05f3e 100644
--- a/src/testdir/test_cmdwin.vim
+++ b/src/testdir/test_cmdwin.vim
@@ -1,8 +1,6 @@
 " Tests for editing the command line.
 
 source check.vim
-CheckFeature cmdwin
-
 source screendump.vim
 
 func Test_getcmdwintype()
diff --git a/src/testdir/test_tabpage.vim b/src/testdir/test_tabpage.vim
index fe97578..ef265ed 100644
--- a/src/testdir/test_tabpage.vim
+++ b/src/testdir/test_tabpage.vim
@@ -617,8 +617,6 @@
 
 " Test for closing the tab page from a command window
 func Test_tabpage_close_cmdwin()
-  CheckFeature cmdwin
-
   tabnew
   call feedkeys("q/:tabclose\<CR>\<Esc>", 'xt')
   call assert_equal(2, tabpagenr('$'))
diff --git a/src/testdir/test_termcodes.vim b/src/testdir/test_termcodes.vim
index 578c970..cb1d01a 100644
--- a/src/testdir/test_termcodes.vim
+++ b/src/testdir/test_termcodes.vim
@@ -367,8 +367,6 @@
 
 " Test for using the mouse to increase the height of the cmdline window
 func Test_mouse_cmdwin_resize()
-  CheckFeature cmdwin
-
   let save_mouse = &mouse
   let save_term = &term
   let save_ttymouse = &ttymouse
diff --git a/src/testdir/test_window_cmd.vim b/src/testdir/test_window_cmd.vim
index 017fa67..7718757 100644
--- a/src/testdir/test_window_cmd.vim
+++ b/src/testdir/test_window_cmd.vim
@@ -20,8 +20,6 @@
 endfunc
 
 func Test_window_cmd_cmdwin_with_vsp()
-  CheckFeature cmdwin
-
   let efmt = 'Expected 0 but got %d (in ls=%d, %s window)'
   for v in range(0, 2)
     exec "set ls=" . v
diff --git a/src/version.c b/src/version.c
index 540ea37..61f2fd2 100644
--- a/src/version.c
+++ b/src/version.c
@@ -700,6 +700,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    663,
+/**/
     662,
 /**/
     661,