diff --git a/infoschema/cluster_tables_test.go b/infoschema/cluster_tables_test.go
index 781f52bebe519..ce73bb726ae4c 100644
--- a/infoschema/cluster_tables_test.go
+++ b/infoschema/cluster_tables_test.go
@@ -1053,6 +1053,8 @@ func TestSetBindingStatusBySQLDigest(t *testing.T) {
 	tk.MustExec(sql)
 	tk.MustQuery("select @@last_plan_from_binding").Check(testkit.Rows("1"))
 	tk.MustGetErrMsg("set binding enabled for sql digest '2'", "can't find any binding for '2'")
+	tk.MustGetErrMsg("set binding enabled for sql digest ''", "sql digest is empty")
+	tk.MustGetErrMsg("set binding disabled for sql digest ''", "sql digest is empty")
 }
 
 func TestCreateBindingWhenCloseStmtSummaryTable(t *testing.T) {