diff --git a/renderdoc/driver/d3d12/d3d12_replay.cpp b/renderdoc/driver/d3d12/d3d12_replay.cpp
index ce83b69c7..73afff3a6 100644
--- a/renderdoc/driver/d3d12/d3d12_replay.cpp
+++ b/renderdoc/driver/d3d12/d3d12_replay.cpp
@@ -1415,6 +1415,8 @@ void D3D12Replay::FillRootElements(uint32_t eventId, const D3D12RenderState::Roo
     samp.minLOD = sampDesc.MinLOD;
     samp.mipLODBias = sampDesc.MipLODBias;
   }
+
+  rootElements.resize(ridx);
 }
 
 void D3D12Replay::SavePipelineState(uint32_t eventId)