diff --git a/gfx/d3d9/d3d_shared.h b/gfx/d3d9/d3d_shared.h
index cd05ffd907..01e06b302e 100644
--- a/gfx/d3d9/d3d_shared.h
+++ b/gfx/d3d9/d3d_shared.h
@@ -14,7 +14,7 @@ static void d3d_deinit_chain(d3d_video_t *d3d);
 static bool d3d_init_chain(d3d_video_t *d3d,
       const video_info_t *video_info);
 
-static void renderchain_free(d3d_video_t *d3d);
+static void renderchain_free(void *data);
 static void d3d_deinit_shader(d3d_video_t *d3d);
 static bool d3d_init_shader(d3d_video_t *d3d);