diff --git a/util/test/demos/d3d12/d3d12_workgroup_zoo.cpp b/util/test/demos/d3d12/d3d12_workgroup_zoo.cpp
index c72f1f942..08ca0771e 100644
--- a/util/test/demos/d3d12/d3d12_workgroup_zoo.cpp
+++ b/util/test/demos/d3d12/d3d12_workgroup_zoo.cpp
@@ -425,6 +425,7 @@ void main(uint3 inTid : SV_DispatchThreadID)
         for(int i = 0; i < numCompTests; i++)
         {
           cmd->SetComputeRoot32BitConstant(0, i, 0);
+          cmd->SetComputeRoot32BitConstant(0, i + 1, 1);
           cmd->Dispatch(2, 1, 1);
         }