diff --git a/src/multibyte/internal.h b/src/multibyte/internal.h
index cd1196baff00df9cacc7911d9c63d13ba978ae4f..25ba240e06269927dda0380b027c3f5e9c08f630 100644
--- a/src/multibyte/internal.h
+++ b/src/multibyte/internal.h
@@ -19,4 +19,4 @@ extern const uint32_t bittab[] ATTR_LIBC_VISIBILITY;
 #define FAILSTATE R(0x80,0x80)
 
 #define SA 0xc2u
-#define SB 0xf5u
+#define SB 0xf4u