diff --git a/ChangeLog b/ChangeLog
index 819bc61c74..594672fc46 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,4 +1,4 @@
-Fri Dec 14 11:54:06 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+Fri Dec 14 12:36:35 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* configure.in (RUBY_CHECK_VARTYPE): check if a variable is defined
 	  and its type.
@@ -9,6 +9,9 @@ Fri Dec 14 11:54:06 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* lib/mkmf.rb (try_var): should fail for functions.
 
+	* ext/readline/extconf.rb: should use have_func for functions instead
+	  of have_var.
+
 Fri Dec 14 08:17:24 2007  Tanaka Akira  <akr@fsij.org>
 
 	* eval.c (rb_protect): restore root_jmpbuf even if proc exits by
diff --git a/ext/readline/extconf.rb b/ext/readline/extconf.rb
index b57a36f3a5..b820c0b32f 100644
--- a/ext/readline/extconf.rb
+++ b/ext/readline/extconf.rb
@@ -42,9 +42,9 @@ else
   end
 end
 
-have_readline_var("rl_filename_completion_function")
-have_readline_var("rl_username_completion_function")
-have_readline_var("rl_completion_matches")
+have_func("rl_filename_completion_function")
+have_func("rl_username_completion_function")
+have_func("rl_completion_matches")
 have_readline_var("rl_deprep_term_function")
 have_readline_var("rl_completion_append_character")
 have_readline_var("rl_basic_word_break_characters")
@@ -59,7 +59,6 @@ have_func("rl_cleanup_after_signal")
 have_func("rl_clear_signals")
 have_func("rl_vi_editing_mode")
 have_func("rl_emacs_editing_mode")
-have_func("rl_clear_signals")
 have_func("replace_history_entry")
 have_func("remove_history")
 create_makefile("readline")