diff --git a/src/testdir/test_zip_plugin.vim b/src/testdir/test_zip_plugin.vim
index 4e8eff4ed..3579a4653 100644
--- a/src/testdir/test_zip_plugin.vim
+++ b/src/testdir/test_zip_plugin.vim
@@ -10,8 +10,6 @@ endif
 runtime plugin/zipPlugin.vim
 
 def Test_zip_basic()
-  var _sl = &shellslash
-  set noshellslash
 
   ### get our zip file
   if !filecopy("samples/test.zip", "X.zip")
@@ -134,6 +132,4 @@ def Test_zip_basic()
 
   bw
 
-  &shellslash = _sl
-
 enddef
diff --git a/src/version.c b/src/version.c
index 3a6faeb53..c4ade6f4f 100644
--- a/src/version.c
+++ b/src/version.c
@@ -704,6 +704,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    663,
 /**/
     662,
 /**/