diff --git a/ChangeLog b/ChangeLog
index 23198f2e3..165dd4ff1 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -56,6 +56,7 @@ $Id$
   Martynas Mickevičius
 + patch #2967320 [designer] Colored relations based on the primary key,
   thanks to GreenRover - greenrover
+- [core] Provide way for vendors to easily change paths to config files.
 
 3.3.2.0 (not yet released)
 - patch #2969449 [core] Name for MERGE engine varies depending on the
diff --git a/libraries/auth/cookie.auth.lib.php b/libraries/auth/cookie.auth.lib.php
index 2ae3d2fd4..0ea4a8166 100644
--- a/libraries/auth/cookie.auth.lib.php
+++ b/libraries/auth/cookie.auth.lib.php
@@ -199,8 +199,8 @@ if (top != self) {
 <body class="loginform">
 
     <?php
-    if (file_exists('./config.header.inc.php')) {
-          require './config.header.inc.php';
+    if (file_exists(CUSTOM_HEADER_FILE)) {
+        require CUSTOM_HEADER_FILE;
     }
     ?>
 
@@ -343,8 +343,8 @@ window.setTimeout('PMA_focusInput()', 500);
 // ]]>
 </script>
     <?php
-    if (file_exists('./config.footer.inc.php')) {
-         require './config.footer.inc.php';
+    if (file_exists(CUSTOM_FOOTER_FILE)) {
+        require CUSTOM_FOOTER_FILE;
     }
     ?>
 </body>
@@ -682,7 +682,7 @@ function PMA_auth_fails()
             }
         }
     } elseif (PMA_DBI_getError()) {
-        $conn_error = '#' . $GLOBALS['errno'] . ' ' . $GLOBALS['strCannotLogin']; 
+        $conn_error = '#' . $GLOBALS['errno'] . ' ' . $GLOBALS['strCannotLogin'];
     } else {
         $conn_error = $GLOBALS['strCannotLogin'];
     }
diff --git a/libraries/auth/http.auth.lib.php b/libraries/auth/http.auth.lib.php
index af1b353b8..8d67cb4ca 100644
--- a/libraries/auth/http.auth.lib.php
+++ b/libraries/auth/http.auth.lib.php
@@ -55,8 +55,8 @@ function PMA_auth()
 </head>
 <body>
     <?php
-    if (file_exists('./config.header.inc.php')) {
-        require './config.header.inc.php';
+    if (file_exists(CUSTOM_HEADER_FILE)) {
+        require CUSTOM_HEADER_FILE;
     }
     ?>
 
@@ -69,8 +69,8 @@ function PMA_auth()
     <?php
     PMA_Message::error('strWrongUser')->display();
 
-    if (file_exists('./config.footer.inc.php')) {
-        require './config.footer.inc.php';
+    if (file_exists(CUSTOM_FOOTER_FILE)) {
+        require CUSTOM_FOOTER_FILE;
     }
     ?>
 
diff --git a/libraries/common.inc.php b/libraries/common.inc.php
index fd4f3d1cb..a81d1970d 100644
--- a/libraries/common.inc.php
+++ b/libraries/common.inc.php
@@ -288,7 +288,7 @@ if (! function_exists('preg_replace')) {
  * force reading of config file, because we removed sensitive values
  * in the previous iteration
  */
-$GLOBALS['PMA_Config'] = new PMA_Config('./config.inc.php');
+$GLOBALS['PMA_Config'] = new PMA_Config(CONFIG_FILE);
 
 if (!defined('PMA_MINIMUM_COMMON')) {
     $GLOBALS['PMA_Config']->checkPmaAbsoluteUri();
@@ -589,7 +589,7 @@ require_once './libraries/select_lang.lib.php';
 if ($GLOBALS['PMA_Config']->error_config_file) {
     $error = $strConfigFileError
         . '<br /><br />'
-        . ($GLOBALS['PMA_Config']->getSource() == './config.inc.php' ?
+        . ($GLOBALS['PMA_Config']->getSource() == CONFIG_FILE ?
         '<a href="show_config_errors.php"'
         .' target="_blank">' . $GLOBALS['PMA_Config']->getSource() . '</a>'
         :
diff --git a/libraries/footer.inc.php b/libraries/footer.inc.php
index 09f8d5cee..7f7f34400 100644
--- a/libraries/footer.inc.php
+++ b/libraries/footer.inc.php
@@ -200,8 +200,8 @@ setURLHash("<?php echo PMA_generate_common_url($url_params, 'text', ''); ?>");
 }
 
 // Include possible custom footers
-if (file_exists('./config.footer.inc.php')) {
-    require './config.footer.inc.php';
+if (file_exists(CUSTOM_FOOTER_FILE)) {
+    require CUSTOM_FOOTER_FILE;
 }
 
 
diff --git a/libraries/header.inc.php b/libraries/header.inc.php
index 18a327b48..324852b86 100644
--- a/libraries/header.inc.php
+++ b/libraries/header.inc.php
@@ -47,8 +47,8 @@ if (empty($GLOBALS['is_header_sent'])) {
     <?php
 
     // Include possible custom headers
-    if (file_exists('./config.header.inc.php')) {
-        require './config.header.inc.php';
+    if (file_exists(CUSTOM_HEADER_FILE)) {
+        require CUSTOM_HEADER_FILE;
     }
 
 
diff --git a/libraries/vendor_config.php b/libraries/vendor_config.php
index 90e8a3538..35b6dea37 100644
--- a/libraries/vendor_config.php
+++ b/libraries/vendor_config.php
@@ -34,4 +34,25 @@ define('SETUP_CONFIG_FILE', './config/config.inc.php');
  */
 define('SETUP_DIR_WRITABLE', true);
 
+/**
+ * Directory where configuration files are stored.
+ * It is not used directly in code, just a convenient
+ * define used further in this file.
+ */
+define('CONFIG_DIR', './');
+
+/**
+ * Filename of a configuration file.
+ */
+define('CONFIG_FILE', CONFIG_DIR . 'config.inc.php');
+
+/**
+ * Filename of custom header file.
+ */
+define('CUSTOM_HEADER_FILE', CONFIG_DIR . 'config.header.inc.php');
+
+/**
+ * Filename of custom footer file.
+ */
+define('CUSTOM_FOOTER_FILE', CONFIG_DIR . 'config.footer.inc.php');
 ?>
diff --git a/show_config_errors.php b/show_config_errors.php
index e9bb4e5b6..8b1cd187e 100644
--- a/show_config_errors.php
+++ b/show_config_errors.php
@@ -7,12 +7,14 @@
  * @package phpMyAdmin
  */
 
+require './libraries/vendor_config.php';
+
 echo "Starting to parse config file...\n";
 
 error_reporting(E_ALL);
 /**
  * Read config file.
  */
-require './config.inc.php';
+require CONFIG_FILE;
 
 ?>
