diff --git a/src/main/scala/rocket/Decode.scala b/src/main/scala/rocket/Decode.scala
index 6d7f003f9dc..7ea8580372d 100644
--- a/src/main/scala/rocket/Decode.scala
+++ b/src/main/scala/rocket/Decode.scala
@@ -2,7 +2,8 @@
 
 package freechips.rocketchip.rocket
 
-import Chisel._
+import chisel3._
+import chisel3.util.BitPat
 import chisel3.util.experimental.decode._
 
 object DecodeLogic