diff --git a/core/src/test/scala/org/apache/spark/serializer/KryoSerializerSuite.scala b/core/src/test/scala/org/apache/spark/serializer/KryoSerializerSuite.scala
index 0bd91a8dba2ab3c05faada5f2a7e78867899ba29..5faf108b394a1c27bcdb174c7f1f9a113d19cf45 100644
--- a/core/src/test/scala/org/apache/spark/serializer/KryoSerializerSuite.scala
+++ b/core/src/test/scala/org/apache/spark/serializer/KryoSerializerSuite.scala
@@ -62,6 +62,10 @@ class KryoSerializerSuite extends FunSuite with SharedSparkContext {
     val thrown3 = intercept[IllegalArgumentException](new KryoSerializer(conf4).newInstance())
     assert(thrown3.getMessage.contains(kryoBufferProperty))
     assert(!thrown3.getMessage.contains(kryoBufferMaxProperty))
+    val conf5 = conf.clone()
+    conf5.set(kryoBufferProperty, "8m")
+    conf5.set(kryoBufferMaxProperty, "9m")
+    new KryoSerializer(conf5).newInstance()
   }
   
   test("basic types") {