diff --git a/src/main/scala/vexiiriscv/Generate.scala b/src/main/scala/vexiiriscv/Generate.scala
index 52014ce..2dd4614 100644
--- a/src/main/scala/vexiiriscv/Generate.scala
+++ b/src/main/scala/vexiiriscv/Generate.scala
@@ -65,7 +65,7 @@ object GenerateTilelink extends App {
       val mem = new SlaveBus(
         M2sSupport(
           transfers = M2sTransfers.all,
-          dataWidth = param.xlen,
+          dataWidth = param.memDataWidth,
           addressWidth = param.physicalWidth
         ),
         S2mParameters(