diff --git a/gfx/drivers/sdl_gfx.c b/gfx/drivers/sdl_gfx.c
index 9f045b3918..689baf6f64 100644
--- a/gfx/drivers/sdl_gfx.c
+++ b/gfx/drivers/sdl_gfx.c
@@ -17,6 +17,7 @@
 #include <stdlib.h>
 #include <string.h>
 
+#include <retro_assert.h>
 #include <gfx/scaler/scaler.h>
 
 #include "SDL.h"