diff --git a/dlls/d3d9/buffer.c b/dlls/d3d9/buffer.c
index 7e178f278fd..840d7e95ea4 100644
--- a/dlls/d3d9/buffer.c
+++ b/dlls/d3d9/buffer.c
@@ -402,12 +402,13 @@ static ULONG WINAPI d3d9_indexbuffer_Release(IDirect3DIndexBuffer9 *iface)
 
     if (!refcount)
     {
+        struct wined3d_buffer *draw_buffer = buffer->draw_buffer;
         IDirect3DDevice9Ex *device = buffer->parent_device;
 
         wined3d_mutex_lock();
         wined3d_buffer_decref(buffer->wined3d_buffer);
-        if (buffer->draw_buffer)
-            wined3d_buffer_decref(buffer->draw_buffer);
+        if (draw_buffer)
+            wined3d_buffer_decref(draw_buffer);
         wined3d_mutex_unlock();
 
         /* Release the device last, as it may cause the device to be destroyed. */