diff --git a/hdl/chisel/src/kelvin/Parameters.scala b/hdl/chisel/src/kelvin/Parameters.scala
index 0080486..3546a74 100644
--- a/hdl/chisel/src/kelvin/Parameters.scala
+++ b/hdl/chisel/src/kelvin/Parameters.scala
@@ -52,7 +52,7 @@
   // Machine.
   val programCounterBits = 32
   val instructionBits = 32
-  val instructionLanes = 8
+  val instructionLanes = 4
 
   val vectorCountBits = log2Ceil(vectorBits / 8) + 1 + 2  // +2 stripmine