diff --git a/pkg/ttl/cache/ttlstatus_test.go b/pkg/ttl/cache/ttlstatus_test.go
index d7a6697546868..3c6c1a73d5329 100644
--- a/pkg/ttl/cache/ttlstatus_test.go
+++ b/pkg/ttl/cache/ttlstatus_test.go
@@ -169,13 +169,17 @@ func TestTTLStatusCache(t *testing.T) {
 	}
 	for index, testCase := range testCases {
 		t.Run(testCase.columnName, func(t *testing.T) {
+			tk.MustExec("delete from mysql.tidb_ttl_table_status")
 			sql := fmt.Sprintf(`insert into mysql.tidb_ttl_table_status (table_id, %s) values (%d, %s)`,
 				testCase.columnName, index, testCase.sqlLiteral)
 
 			tk.MustExec(sql)
 			assert.NoError(t, isc.Update(context.Background(), ttlSession))
-			assert.Equal(t, index+1, len(isc.Tables))
-			testCase.assert(isc.Tables[int64(index)])
+			assert.Len(t, isc.Tables, 1)
+			table := isc.Tables[int64(index)]
+			if assert.NotNil(t, table) {
+				testCase.assert(table)
+			}
 		})
 	}
 }