diff --git a/renderdoc/driver/d3d12/d3d12_overlay.cpp b/renderdoc/driver/d3d12/d3d12_overlay.cpp
index 5deda933c..280e3fb11 100644
--- a/renderdoc/driver/d3d12/d3d12_overlay.cpp
+++ b/renderdoc/driver/d3d12/d3d12_overlay.cpp
@@ -106,6 +106,7 @@ struct D3D12QuadOverdrawCallback : public D3D12ActionCallback
       range.Flags = D3D12_DESCRIPTOR_RANGE_FLAG_NONE;
       range.OffsetInDescriptorsFromTableStart = 0;
 
+      modsig.Flags &= ~D3D12_ROOT_SIGNATURE_FLAG_DENY_PIXEL_SHADER_ROOT_ACCESS;
       modsig.Parameters.push_back(D3D12RootSignatureParameter());
       D3D12RootSignatureParameter &param = modsig.Parameters.back();
       param.ParameterType = D3D12_ROOT_PARAMETER_TYPE_DESCRIPTOR_TABLE;