diff --git a/algebird-core/src/main/scala-3/com/twitter/algebird/AdaptiveVector.scala b/algebird-core/src/main/scala-3/com/twitter/algebird/AdaptiveVector.scala
index 421c7f4d8..e066849c2 100644
--- a/algebird-core/src/main/scala-3/com/twitter/algebird/AdaptiveVector.scala
+++ b/algebird-core/src/main/scala-3/com/twitter/algebird/AdaptiveVector.scala
@@ -176,7 +176,7 @@ sealed trait AdaptiveVector[V] extends IndexedSeq[V] {
 
   /** How many items are not sparse */
   def denseCount: Int
-  def size: Int
+  // def size: Int
   override def apply(idx: Int): V
   def updated(idx: Int, v: V): AdaptiveVector[V]
 
diff --git a/algebird-core/src/main/scala-3/com/twitter/algebird/compat.scala b/algebird-core/src/main/scala-3/com/twitter/algebird/compat.scala
index d9015527d..0c21963b1 100644
--- a/algebird-core/src/main/scala-3/com/twitter/algebird/compat.scala
+++ b/algebird-core/src/main/scala-3/com/twitter/algebird/compat.scala
@@ -31,6 +31,7 @@ private[algebird] trait CompatFold {
 private[algebird] trait CompatDecayedVector {
   // This is the default monoid that never thresholds.
   // If you want to set a specific accuracy you need to implicitly override this
-  implicit def monoid[F, C[_]](implicit vs: VectorSpace[F, C], metric: Metric[C[F]]):Monoid[DecayedVector[C]] =
-    DecayedVector.monoidWithEpsilon(-1.0)
+//  implicit def monoid[F, C[_]](implicit vs: VectorSpace[F, C], metric: Metric[C[F]]):Monoid[DecayedVector[C]] =
+//    DecayedVector.monoidWithEpsilon(-1.0)
 }
+