1 files changed, 2 insertions, 2 deletions

diff --git a/lbaselib.c b/lbaselib.c
index f3b0a577..40caaa94 100644
--- a/lbaselib.c
+++ b/lbaselib.c
@@ -1,5 +1,5 @@
 /*
-** $Id: lbaselib.c,v 1.308 2014/12/08 15:26:55 roberto Exp roberto $
+** $Id: lbaselib.c,v 1.309 2014/12/10 12:26:42 roberto Exp roberto $
 ** Basic library
 ** See Copyright Notice in lua.h
 */
@@ -55,7 +55,7 @@ static const char *b_str2int (const char *s, int base, lua_Integer *pn) {
     return NULL;
   do {
     int digit = (isdigit((unsigned char)*s)) ? *s - '0'
-                   : toupper((unsigned char)*s) - 'A' + 10;
+                   : (toupper((unsigned char)*s) - 'A') + 10;
     if (digit >= base) return NULL;  /* invalid numeral */
     n = n * base + digit;
     s++;