diff --git a/src/d3d9/d3d9_swapchain.cpp b/src/d3d9/d3d9_swapchain.cpp
index 8b50c0c8..48737bd1 100644
--- a/src/d3d9/d3d9_swapchain.cpp
+++ b/src/d3d9/d3d9_swapchain.cpp
@@ -271,7 +271,6 @@ namespace dxvk {
         srcSubresource.mipLevel,
         srcSubresource.arrayLayer, 1 };
 
-      VkExtent3D dstExtent = blittedSrc->mipLevelExtent(dstSubresource.mipLevel);
       VkExtent3D srcExtent = srcImage->mipLevelExtent(srcSubresource.mipLevel);
 
       // Blit to a subrect of the src extents