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-rw-r--r--include/gba/defines.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/include/gba/defines.h b/include/gba/defines.h
index 702d4a352..6925864a2 100644
--- a/include/gba/defines.h
+++ b/include/gba/defines.h
@@ -39,8 +39,8 @@
#define BG_CHAR_ADDR(n) (BG_VRAM + (BG_CHAR_SIZE * (n)))
#define BG_SCREEN_ADDR(n) (BG_VRAM + (BG_SCREEN_SIZE * (n)))
-#define BG_TILE_H_FLIP(n) (0x400 | (n))
-#define BG_TILE_V_FLIP(n) (0x800 | (n))
+#define BG_TILE_H_FLIP(n) (0x400 + (n))
+#define BG_TILE_V_FLIP(n) (0x800 + (n))
// text-mode BG
#define OBJ_VRAM0 (VRAM + 0x10000)