diff --git a/lib/logstorage/pipe_filter_test.go b/lib/logstorage/pipe_filter_test.go
index 99a4e2fbf..0c3183019 100644
--- a/lib/logstorage/pipe_filter_test.go
+++ b/lib/logstorage/pipe_filter_test.go
@@ -41,7 +41,7 @@ func TestPipeFilter(t *testing.T) {
 	}, [][]Field{})
 
 	// filter match
-	f("filter _msg:foo", [][]Field{
+	f("filter foo", [][]Field{
 		{
 			{"_msg", `{"foo":"bar"}`},
 			{"a", `test`},