1 files changed, 1 insertions, 1 deletions

diff --git a/src/lj_char.h b/src/lj_char.h
index 7b7c1322..c3c86d34 100644
--- a/src/lj_char.h
+++ b/src/lj_char.h
@@ -21,7 +21,7 @@
 #define LJ_CHAR_GRAPH   (LJ_CHAR_ALNUM|LJ_CHAR_PUNCT)
 
 /* Only pass -1 or 0..255 to these macros. Never pass a signed char! */
-#define lj_char_isa(c, t)       (lj_char_bits[(c)+1] & t)
+#define lj_char_isa(c, t)       ((lj_char_bits+1)[(c)] & t)
 #define lj_char_iscntrl(c)      lj_char_isa((c), LJ_CHAR_CNTRL)
 #define lj_char_isspace(c)      lj_char_isa((c), LJ_CHAR_SPACE)
 #define lj_char_ispunct(c)      lj_char_isa((c), LJ_CHAR_PUNCT)