diff --git a/core/src/test/scala/org/apache/spark/rdd/RDDSuite.scala b/core/src/test/scala/org/apache/spark/rdd/RDDSuite.scala
index 6096149b19d724aa7a99faa424438cf247c57d26..c1df5e151e8acca7073a50209cfa4b5460795262 100644
--- a/core/src/test/scala/org/apache/spark/rdd/RDDSuite.scala
+++ b/core/src/test/scala/org/apache/spark/rdd/RDDSuite.scala
@@ -179,7 +179,7 @@ class RDDSuite extends FunSuite with SharedSparkContext {
     // when shuffling, we can increase the number of partitions
     val coalesced6 = data.coalesce(20, shuffle = true)
     assert(coalesced6.partitions.size === 20)
-    assert(coalesced6.collect().toList === (1 to 10).toList)
+    assert(coalesced6.collect().toSet === (1 to 10).toSet)
   }
 
   test("coalesced RDDs with locality") {