diff --git a/hw/rtl/VX_platform.vh b/hw/rtl/VX_platform.vh
index 9eb4d279..b2a6d8c8 100644
--- a/hw/rtl/VX_platform.vh
+++ b/hw/rtl/VX_platform.vh
@@ -26,6 +26,8 @@
 `define NUM_THREADS 8
 `define NUM_WARPS 8
 
+`define FIRESIM
+
 // synthesis only
 `ifndef SIMULATION
 `define SYNTHESIS
diff --git a/hw/rtl/fpu/VX_fpu_fpnew.sv b/hw/rtl/fpu/VX_fpu_fpnew.sv
index 447f120a..93cd6cac 100644
--- a/hw/rtl/fpu/VX_fpu_fpnew.sv
+++ b/hw/rtl/fpu/VX_fpu_fpnew.sv
@@ -13,9 +13,7 @@
 
 `include "VX_fpu_define.vh"
 
-`ifdef FPU_FPNEW
-
-module VX_fpu_fpnew 
+module VX_fpu_fpnew
     import VX_fpu_pkg::*; 
     import fpnew_pkg::*; 
     import cf_math_pkg::*; 
@@ -110,7 +108,7 @@ module VX_fpu_fpnew
     `UNUSED_VAR (fmt)
 
     always @(*) begin
-        fpu_op          = 'x;
+        fpu_op          = fpnew_pkg::ADD;
         fpu_rnd         = frm;  
         fpu_op_mod      = 0;        
         fpu_has_fflags  = 1;
@@ -283,4 +281,3 @@ module VX_fpu_fpnew
     );
 
 endmodule
-`endif
diff --git a/third_party/fpnew b/third_party/fpnew
index 39ed2d7b..25a0d676 160000
--- a/third_party/fpnew
+++ b/third_party/fpnew
@@ -1 +1 @@
-Subproject commit 39ed2d7b53723cece877b73ce4a8ae3ffc4c707e
+Subproject commit 25a0d6763ffe83e1c8701bef5758996c484c1f58