diff --git a/uncore/src/main/scala/tilelink2/TLNodes.scala b/uncore/src/main/scala/tilelink2/TLNodes.scala
index 270d3cab..27342d9e 100644
--- a/uncore/src/main/scala/tilelink2/TLNodes.scala
+++ b/uncore/src/main/scala/tilelink2/TLNodes.scala
@@ -20,6 +20,7 @@ object TLImp extends NodeImp[TLClientPortParameters, TLManagerPortParameters, TL
   }
 
   def connect(bo: TLBundle, eo: TLEdgeOut, bi: TLBundle, ei: TLEdgeIn)(implicit sourceInfo: SourceInfo): Unit = {
+    require (eo.asInstanceOf[TLEdgeParameters] == ei.asInstanceOf[TLEdgeParameters])
     TLMonitor.legalize(bo, eo, bi, ei, sourceInfo)
     bi <> bo
     val mask = ~UInt(ei.manager.beatBytes - 1)