diff --git a/graphx/src/main/scala/org/apache/spark/graphx/VertexRDD.scala b/graphx/src/main/scala/org/apache/spark/graphx/VertexRDD.scala
index cc20fd5e085b2..210217df55ec2 100644
--- a/graphx/src/main/scala/org/apache/spark/graphx/VertexRDD.scala
+++ b/graphx/src/main/scala/org/apache/spark/graphx/VertexRDD.scala
@@ -392,7 +392,7 @@ object VertexRDD {
    */
   def apply[VD: ClassTag](
       vertices: RDD[(VertexId, VD)], edges: EdgeRDD[_, _], defaultVal: VD): VertexRDD[VD] = {
-    VertexRDD(vertices, edges, defaultVal, (a, b) => b)
+    VertexRDD(vertices, edges, defaultVal, (a, b) => a)
   }
 
   /**