diff --git a/include/arm11/open_agb_firm.h b/include/arm11/open_agb_firm.h
index 4a092f4..c0b196c 100644
--- a/include/arm11/open_agb_firm.h
+++ b/include/arm11/open_agb_firm.h
@@ -54,7 +54,7 @@ struct global_oaf_config
 #define SAVE_POLICY_SIZE  4
 
 Result oafParseConfigEarly(void);
-u8 oafGetBacklightConfig(void);
+u16 oafGetBacklightConfig(void);
 Result oafInitAndRun(void);
 void oafUpdate(void);
 void oafFinish(void);