1 files changed, 3 insertions, 3 deletions
diff --git a/core/src/main/scala/chisel3/Aggregate.scala b/core/src/main/scala/chisel3/Aggregate.scala
index dbde7068..600e2d11 100644
--- a/core/src/main/scala/chisel3/Aggregate.scala
+++ b/core/src/main/scala/chisel3/Aggregate.scala
@@ -338,11 +338,11 @@ sealed class Vec[T <: Data] private[chisel3] (gen: => T, val length: Int)
   def do_reduceTree(redOp: (T, T) => T, layerOp: (T) => T = (x: T) => x)
                    (implicit sourceInfo: SourceInfo, compileOptions: CompileOptions) : T = {
     require(!isEmpty, "Cannot apply reduction on a vec of size 0")
-    var curLayer = this
+    var curLayer : Seq[T] = this
     while (curLayer.length > 1) {
-      curLayer = VecInit(curLayer.grouped(2).map( x =>
+      curLayer = curLayer.grouped(2).map( x =>
         if (x.length == 1) layerOp(x(0)) else redOp(x(0), x(1))
-      ).toSeq)
+      ).toSeq
     }
     curLayer(0)
   }