diff --git a/src/d3d9/d3d9_device.cpp b/src/d3d9/d3d9_device.cpp
index 441e258c..e3298247 100644
--- a/src/d3d9/d3d9_device.cpp
+++ b/src/d3d9/d3d9_device.cpp
@@ -326,6 +326,8 @@ namespace dxvk {
           UINT                iBackBuffer,
           D3DBACKBUFFER_TYPE  Type,
           IDirect3DSurface9** ppBackBuffer) {
+    InitReturnPtr(ppBackBuffer);
+
     if (unlikely(iSwapChain != 0))
       return D3DERR_INVALIDCALL;