diff --git a/ui/fixtures/cmd.basic.json b/ui/fixtures/cmd.basic.json
index ba2cfa5..8c8b326 100644
--- a/ui/fixtures/cmd.basic.json
+++ b/ui/fixtures/cmd.basic.json
@@ -151,6 +151,14 @@
 	"comment": "and a obj was created for subdir",
 	"count": 4
 },
+{
+	"title": "that two files can be tagged at once",
+	"cmd": [ "modify", "+random=", "--", "t/newfile.txt", "test.txt" ]
+},
+{
+	"title": "that two files can be un-tagged at once",
+	"cmd": [ "modify", "-random=", "t/newfile.txt", "test.txt" ]
+},
 {
 	"special": "set hostid",
 	"comment": "and that a modified hostid",
@@ -176,7 +184,7 @@
 	"title": "must be a + or -",
 	"cmd": [ "modify", "modified=foo", "test.txt" ],
 	"exit": 1,
-	"stderr": "ERROR: tag needs to start with a \"+\" (add) or a \"-\" (remove).\n"
+	"stderr": "ERROR: file not found: 'modified=foo', or invalid tag specification.\n"
 },
 {
 	"special": "iter is unique"