diff --git a/src/optiondefs.h b/src/optiondefs.h
index 3670107..374764b 100644
--- a/src/optiondefs.h
+++ b/src/optiondefs.h
@@ -2837,7 +2837,7 @@
     {"wildmode",    "wim",  P_STRING|P_VI_DEF|P_ONECOMMA|P_NODUP,
 			    (char_u *)&p_wim, PV_NONE,
 			    {(char_u *)"full", (char_u *)0L} SCTX_INIT},
-    {"wildoptions", "wop",  P_STRING|P_VI_DEF,
+    {"wildoptions", "wop",  P_STRING|P_VI_DEF|P_ONECOMMA|P_NODUP,
 			    (char_u *)&p_wop, PV_NONE,
 			    {(char_u *)"", (char_u *)0L}
 			    SCTX_INIT},
diff --git a/src/testdir/test_options.vim b/src/testdir/test_options.vim
index ce925d8..17ae094 100644
--- a/src/testdir/test_options.vim
+++ b/src/testdir/test_options.vim
@@ -60,6 +60,13 @@
   set wildchar&
 endfunc
 
+func Test_wildoptions()
+  set wildoptions=
+  set wildoptions+=tagfile
+  set wildoptions+=tagfile
+  call assert_equal('tagfile', &wildoptions)
+endfunc
+
 func Test_options_command()
   let caught = 'ok'
   try
diff --git a/src/version.c b/src/version.c
index 1ca9dee..9e8ba92 100644
--- a/src/version.c
+++ b/src/version.c
@@ -747,6 +747,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    810,
+/**/
     809,
 /**/
     808,