diff --git a/gfx/d3d/render_chain_null.c b/gfx/d3d/render_chain_null.c
index e2689c287c..4bb794665a 100644
--- a/gfx/d3d/render_chain_null.c
+++ b/gfx/d3d/render_chain_null.c
@@ -56,7 +56,7 @@ static bool null_renderchain_init(void *data,
    (void)dev_data;
    (void)final_viewport_data;
    (void)info_data;
-   (void)fmt;
+   (void)rgb32;
 
    return true;
 }