diff --git a/ChangeLog b/ChangeLog
index 136220cc9a..5c62a6602d 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Mon Dec 15 09:27:46 2003  NAKAMURA Usaku  <usa@ruby-lang.org>
+
+	* ext/openssl/ossl_pkcs12.c (ossl_pkcs12_initialize): first argument
+	  of rb_protect should take an argument of VALUE.
+
 Sun Dec 14 18:46:48 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
 
 	* ext/socket/socket.c (Init_socket): IPv6 is not supported although
diff --git a/ext/openssl/ossl_pkcs12.c b/ext/openssl/ossl_pkcs12.c
index 801f765d95..e7d9954c5a 100644
--- a/ext/openssl/ossl_pkcs12.c
+++ b/ext/openssl/ossl_pkcs12.c
@@ -95,12 +95,14 @@ ossl_pkcs12_initialize(int argc, VALUE *argv, VALUE self)
     pkey = cert = ca = Qnil;
     if(!PKCS12_parse((PKCS12*)DATA_PTR(self), passphrase, &key, &x509, &x509s))
 	ossl_raise(ePKCS12Error, NULL);
-    pkey = rb_protect((VALUE(*)())ossl_pkey_new, (VALUE)key, &st); /* NO DUP */
+    pkey = rb_protect((VALUE(*)_((VALUE)))ossl_pkey_new, (VALUE)key,
+		      &st); /* NO DUP */
     if(st) goto err;
-    cert = rb_protect((VALUE(*)())ossl_x509_new, (VALUE)x509, &st);
+    cert = rb_protect((VALUE(*)_((VALUE)))ossl_x509_new, (VALUE)x509, &st);
     if(st) goto err;
     if(x509s){
-	ca = rb_protect((VALUE(*)())ossl_x509_sk2ary, (VALUE)x509s, &st);
+	ca =
+	    rb_protect((VALUE(*)_((VALUE)))ossl_x509_sk2ary, (VALUE)x509s, &st);
 	if(st) goto err;
     }