diff --git a/src/d3d9/d3d9_adapter.cpp b/src/d3d9/d3d9_adapter.cpp
index 4c7821d4..24aeac6b 100644
--- a/src/d3d9/d3d9_adapter.cpp
+++ b/src/d3d9/d3d9_adapter.cpp
@@ -217,6 +217,9 @@ namespace dxvk {
     if (!IsDepthFormat(DepthStencilFormat))
       return D3DERR_NOTAVAILABLE;
 
+    if (RenderTargetFormat == dxvk::D3D9Format::NULL_FORMAT)
+      return D3D_OK;
+
     auto mapping = ConvertFormatUnfixed(RenderTargetFormat);
     if (mapping.FormatColor == VK_FORMAT_UNDEFINED)
       return D3DERR_NOTAVAILABLE;