diff --git a/ChangeLog b/ChangeLog
index 1b80570ba3..9f175214c3 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Sun Dec 28 12:53:10 2008  TAKANO Mitsuhiro (takano32)  <tak@no32.tk>
+
+	* ext/dl/test/test_base.rb: use libc.dylib when the platform is darwin.
+
 Sun Dec 28 12:24:14 2008  Yusuke Endoh  <mame@tsg.ne.jp>
 
 	* thread.c (mutex_free, mutex_unlock): add qualifiers.
diff --git a/ext/dl/test/test_base.rb b/ext/dl/test/test_base.rb
index a0409b8ae8..8466812a1e 100644
--- a/ext/dl/test/test_base.rb
+++ b/ext/dl/test/test_base.rb
@@ -14,6 +14,9 @@ when /linux/
 when /mingw/, /mswin32/
   LIBC_SO = "msvcrt.dll"
   LIBM_SO = "msvcrt.dll"
+when /darwin/
+  LIBC_SO = "/usr/lib/libc.dylib"
+  LIBM_SO = "/usr/lib/libm.dylib"
 else
   LIBC_SO = ARGV[0]
   LIBM_SO = ARGV[1]