diff --git a/newlib/ChangeLog b/newlib/ChangeLog
index f0cb51be2..8be491571 100644
--- a/newlib/ChangeLog
+++ b/newlib/ChangeLog
@@ -1,3 +1,7 @@
+2009-11-06  Jon Turney  <jon.turney@dronecode.org.uk>
+
+	* libc/include/ctype.h (__ctype_lookup): Fix precedence.
+
 2009-10-30  Corinna Vinschen  <corinna@vinschen.de>
 
 	* libc/stdio/fflush.c (_fflush_r): Store old errno to check for
diff --git a/newlib/libc/include/ctype.h b/newlib/libc/include/ctype.h
index 75e1c48b3..56ad5abb6 100644
--- a/newlib/libc/include/ctype.h
+++ b/newlib/libc/include/ctype.h
@@ -54,7 +54,7 @@ extern	__IMPORT char	*__ctype_ptr__;
    Meanwhile, the real index to __ctype_ptr__+1 must be cast to int,
    since isalpha(0x100000001LL) must equal isalpha(1), rather than being
    an out-of-bounds reference on a 64-bit machine.  */
-#define __ctype_lookup(__c) ((__ctype_ptr__+sizeof(""[__c]))[(int)__c])
+#define __ctype_lookup(__c) ((__ctype_ptr__+sizeof(""[__c]))[(int)(__c)])
 
 #define	isalpha(__c)	(__ctype_lookup(__c)&(_U|_L))
 #define	isupper(__c)	((__ctype_lookup(__c)&(_U|_L))==_U)