diff --git a/ChangeLog b/ChangeLog
index 6db80fb7d0..6bc7865be9 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Wed Sep 10 23:00:43 2008  Yusuke Endoh  <mame@tsg.ne.jp>
+
+	* tool/compile_prelude.rb: print "<internal:prelude>" instead of
+	  "prelude.rb" on stack trace.  [ruby-dev:36129]
+
 Wed Sep 10 21:09:32 2008  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
 
 	* test/win32ole/test_err_in_callback.rb: InternetExplorer should
diff --git a/tool/compile_prelude.rb b/tool/compile_prelude.rb
index 70197aebf3..72cf961bd8 100644
--- a/tool/compile_prelude.rb
+++ b/tool/compile_prelude.rb
@@ -64,7 +64,7 @@ tmp = ERB.new(<<'EOS', nil, '%').result(binding)
 #include "vm_core.h"
 
 % preludes.zip(lines_list).each_with_index {|(prelude, (setup_lines, lines)), i|
-static const char prelude_name<%=i%>[] = <%=c_esc(File.basename(prelude))%>;
+static const char prelude_name<%=i%>[] = <%=c_esc("<internal:" + File.basename(prelude, ".rb") + ">")%>;
 static const char prelude_code<%=i%>[] =
 %   (setup_lines+lines).each {|line|
 <%=line%>