diff --git a/ChangeLog b/ChangeLog
index d4f37c4305..40bf0c0bed 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Sun Nov 18 14:03:44 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* eval_method.ci (rb_alias): do not call hook functions until
+	  initialization finishes.  [ruby-talk:279538]
+
 Sun Nov 18 09:09:48 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* lib/mkmf.rb (String#tr_cpp): make preprocessor identifiers.
diff --git a/eval_method.ci b/eval_method.ci
index ff4d3cb0a5..a6b8264e2b 100644
--- a/eval_method.ci
+++ b/eval_method.ci
@@ -603,6 +603,8 @@ rb_alias(VALUE klass, ID name, ID def)
 
     rb_clear_cache_by_id(name);
 
+    if (!ruby_running) return;
+
     if (singleton) {
 	rb_funcall(singleton, singleton_added, 1, ID2SYM(name));
     }