diff --git a/src/evalfunc.c b/src/evalfunc.c
index 69a674d2c4..f49bcb843d 100644
--- a/src/evalfunc.c
+++ b/src/evalfunc.c
@@ -13075,7 +13075,7 @@ f_test_option_not_set(typval_T *argvars, typval_T *rettv UNUSED)
 	EMSG(_(e_invarg));
     else
     {
-	name = get_tv_string_chk(&argvars[0]);
+	name = get_tv_string(&argvars[0]);
 	if (reset_option_was_set(name) == FAIL)
 	    EMSG2(_(e_invarg2), name);
     }
diff --git a/src/version.c b/src/version.c
index 9b2e81b125..dce4643c2f 100644
--- a/src/version.c
+++ b/src/version.c
@@ -794,6 +794,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    388,
 /**/
     387,
 /**/