diff --git a/uncore/src/main/scala/uncore.scala b/uncore/src/main/scala/uncore.scala
index 26bc3ff9..d4822a49 100644
--- a/uncore/src/main/scala/uncore.scala
+++ b/uncore/src/main/scala/uncore.scala
@@ -98,7 +98,7 @@ abstract class ManagerCoherenceAgent(implicit p: Parameters) extends CoherenceAg
     with HasCoherenceAgentWiringHelpers {
   val io = new ManagerTLIO
   def innerTL = io.inner
-  def outerTL = TileLinkIOWrapper(io.outer)(p.alterPartial({case TLId => p(OuterTLId)}))
+  lazy val outerTL = TileLinkIOWrapper(io.outer)(p.alterPartial({case TLId => p(OuterTLId)}))
   def incoherent = io.incoherent
 }