diff --git a/src/main/scala/rocket/Rocket.scala b/src/main/scala/rocket/Rocket.scala
index b143bcc5..a8189831 100644
--- a/src/main/scala/rocket/Rocket.scala
+++ b/src/main/scala/rocket/Rocket.scala
@@ -675,7 +675,7 @@ class Rocket(implicit p: Parameters) extends CoreModule()(p)
   else {
     printf("C%d: %d [%d] pc=[%x] W[r%d=%x][%d] R[r%d=%x] R[r%d=%x] inst=[%x] DASM(%x)\n",
          io.hartid, csr.io.time(31,0), wb_valid, wb_reg_pc,
-         Mux(rf_wen, rf_waddr, UInt(0)), rf_wdata, rf_wen,
+         Mux(rf_wen && !(wb_set_sboard && wb_wen), rf_waddr, UInt(0)), rf_wdata, rf_wen,
          wb_reg_inst(19,15), Reg(next=Reg(next=ex_rs(0))),
          wb_reg_inst(24,20), Reg(next=Reg(next=ex_rs(1))),
          wb_reg_inst, wb_reg_inst)