diff --git a/OptiScaler/shaders/rcas/RCAS_Dx12.cpp b/OptiScaler/shaders/rcas/RCAS_Dx12.cpp
index e5c9fe94..e201d0a9 100644
--- a/OptiScaler/shaders/rcas/RCAS_Dx12.cpp
+++ b/OptiScaler/shaders/rcas/RCAS_Dx12.cpp
@@ -287,7 +287,7 @@ bool RCAS_Dx12::Dispatch(ID3D12Device* InDevice, ID3D12GraphicsCommandList* InCm
     UINT dispatchWidth = 0;
     UINT dispatchHeight = 0;
 
-    dispatchWidth = (inDesc.Width + InNumThreadsX - 1) / InNumThreadsX;
+    dispatchWidth = static_cast<UINT>((inDesc.Width + InNumThreadsX - 1) / InNumThreadsX);
     dispatchHeight = (inDesc.Height + InNumThreadsY - 1) / InNumThreadsY;
 
     InCmdList->Dispatch(dispatchWidth, dispatchHeight, 1);
@@ -576,4 +576,4 @@ RCAS_Dx12::~RCAS_Dx12()
         _constantBuffer->Release();
         _constantBuffer = nullptr;
     }
-}
\ No newline at end of file
+}