diff --git a/include/openssl_functions.php b/include/openssl_functions.php
index ce7829a..d97be82 100644
--- a/include/openssl_functions.php
+++ b/include/openssl_functions.php
@@ -62,7 +62,7 @@ crl_extentions	 = crl_ext
 default_days     = 365
 default_crl_days = 30
 preserve         = no
-default_md       = sha256
+default_md       = $config[default_md]
 
 [ req ]
 default_bits        = $keysize
diff --git a/setup.php-presetup b/setup.php-presetup
index e422dd6..65d328d 100644
--- a/setup.php-presetup
+++ b/setup.php-presetup
@@ -201,7 +201,7 @@ case 'write':
 	print '<strong>Writing configuration files...</strong><br>';
 	flush();
 
-	$config_txt = <<<EOS
+	$config_main_txt = <<<EOS
 <?php
 # PHPki CONFIGURATION FILE
 # Automatically generated by PHPki.  Edit at your own peril.
@@ -284,6 +284,9 @@ case 'write':
 # Default OpenSSL Config File.
 \$config['openssl_cnf']   = \$config['home_dir'] . '/config/openssl.cnf';
 
+# Define default md
+\$config['default_md']         = 'sha512';
+
 \$PHPki_admins = Array(md5('pkiadmin'));
 
 define('OPENSSL',\$config['openssl_bin'].' ');
@@ -301,14 +304,14 @@ EOS;
 	# Write out the CA configuration file.
 	#
 	$fd = fopen("$store_dir/config/config.php",'w');
-	fwrite($fd, $config_txt);
+	fwrite($fd, $config_main_txt);
 	fclose($fd);
 
 
 	#
 	# Create the bootstrap configuration
 	#
-	$config_txt = <<<EOS
+	$config_boot_txt = <<<EOS
 <?php
 define('PHPKI_VERSION','$version');
 define('STORE_DIR','$store_dir');
@@ -321,7 +324,7 @@ EOS;
 	# Write out the bootstrap config
 	#
 	$fd = fopen('./config.php','w');
-	fwrite($fd, $config_txt);
+	fwrite($fd, $config_boot_txt);
 	fclose($fd);
 
 
@@ -351,7 +354,7 @@ crl_extensions	= crl_ext
 default_days	= 365
 default_crl_days= 30
 preserve	 	= no
-default_md	 	= sha256
+default_md	 	= $config[default_md]
 
 [ ca ]
 default_ca		= email_cert