diff --git a/ChangeLog b/ChangeLog
index c02e0eaa43..296f0aae2a 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Sat Nov 22 23:09:45 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
+
+	* configure.in: set enable_pthread to no on MinGW.
+
 Sat Nov 22 22:56:20 2003  Hidetoshi NAGAI  <nagai@ai.kyutech.ac.jp>
 
 	* configure.in: add --enable-pthread option (default: yes)
diff --git a/configure.in b/configure.in
index 56bb15f5d7..d2e7b70e78 100644
--- a/configure.in
+++ b/configure.in
@@ -300,7 +300,7 @@ mingw*)		LIBS="-lwsock32 $LIBS"
 		ac_cv_func_seekdir=yes
 		ac_cv_func_telldir=yes
 		ac_cv_lib_crypt_crypt=no
-		ac_cv_lib_pthread_pthread_mutex_init=no
+		enable_pthread=no
 		;;
 os2-emx*)	LIBS="-lm $LIBS"
 		ac_cv_lib_dir_opendir=no;;