diff --git a/ChangeLog b/ChangeLog
index e90a0efbbf..3b4a545aa1 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Wed Aug 13 23:05:51 2008  TAKAO Kouji  <kouji@takao7.net>
+
+	* string.c (alias_func): changed to 'weak, alias' from 'alias' for
+	  Mac OSX. (closes #429)
+
 Wed Aug 13 19:40:12 2008  Koichi Sasada  <ko1@atdot.net>
 
 	* gc.c: count only freed object as freelist size.
diff --git a/string.c b/string.c
index 7df1d00a88..27b813e4f0 100644
--- a/string.c
+++ b/string.c
@@ -43,9 +43,9 @@
 VALUE rb_cString;
 VALUE rb_cSymbol;
 
-#if defined(__GNUC__) && !(defined(__APPLE__) && (defined(__MACH__) || defined(__DARWIN__)))
+#ifdef __GNUC__
 #define alias_func(old_prot, new_name, args) \
-VALUE old_prot __attribute__((alias(#new_name)));
+VALUE old_prot __attribute__((weak, alias(#new_name)));
 #else
 #define alias_func(old_prot, new_name, args) \
 VALUE old_prot {return new_name args;}