Index: custom/install.php
===================================================================
--- custom/install.php	(revision 15639)
+++ custom/install.php	(working copy)
@@ -9,7 +9,12 @@
 
 		include_once(FULL_PATH . '/core/kernel/startup.php');
 		require_once FULL_PATH . '/core/install/install_toolkit.php';
+		$constants_file = FULL_PATH . '/' . $module_folder . '/constants.php';
 
+		if ( file_exists($constants_file) ) {
+			require_once $constants_file;
+		}
+
 		$toolkit = new kInstallToolkit();
 	}
 	else {
Index: in-auction/install.php
===================================================================
--- in-auction/install.php	(revision 15639)
+++ in-auction/install.php	(working copy)
@@ -20,7 +20,12 @@
 
 		include_once(FULL_PATH . '/core/kernel/startup.php');
 		require_once FULL_PATH . '/core/install/install_toolkit.php';
+		$constants_file = FULL_PATH . '/' . $module_folder . '/constants.php';
 
+		if ( file_exists($constants_file) ) {
+			require_once $constants_file;
+		}
+
 		$toolkit = new kInstallToolkit();
 	}
 	else {
Index: in-bulletin/install.php
===================================================================
--- in-bulletin/install.php	(revision 15639)
+++ in-bulletin/install.php	(working copy)
@@ -21,7 +21,12 @@
 
 		include_once(FULL_PATH . '/core/kernel/startup.php');
 		require_once FULL_PATH . '/core/install/install_toolkit.php';
+		$constants_file = FULL_PATH . '/' . $module_folder . '/constants.php';
 
+		if ( file_exists($constants_file) ) {
+			require_once $constants_file;
+		}
+
 		$toolkit = new kInstallToolkit();
 	}
 	else {
Index: in-commerce/install.php
===================================================================
--- in-commerce/install.php	(revision 15639)
+++ in-commerce/install.php	(working copy)
@@ -20,7 +20,12 @@
 
 		include_once(FULL_PATH . '/core/kernel/startup.php');
 		require_once FULL_PATH . '/core/install/install_toolkit.php';
+		$constants_file = FULL_PATH . '/' . $module_folder . '/constants.php';
 
+		if ( file_exists($constants_file) ) {
+			require_once $constants_file;
+		}
+
 		$toolkit = new kInstallToolkit();
 	}
 	else {
Index: in-link/install.php
===================================================================
--- in-link/install.php	(revision 15639)
+++ in-link/install.php	(working copy)
@@ -21,7 +21,12 @@
 
 		include_once(FULL_PATH . '/core/kernel/startup.php');
 		require_once FULL_PATH . '/core/install/install_toolkit.php';
+		$constants_file = FULL_PATH . '/' . $module_folder . '/constants.php';
 
+		if ( file_exists($constants_file) ) {
+			require_once $constants_file;
+		}
+
 		$toolkit = new kInstallToolkit();
 	}
 	else {
Index: in-news/install.php
===================================================================
--- in-news/install.php	(revision 15639)
+++ in-news/install.php	(working copy)
@@ -21,7 +21,12 @@
 
 		include_once(FULL_PATH . '/core/kernel/startup.php');
 		require_once FULL_PATH . '/core/install/install_toolkit.php';
+		$constants_file = FULL_PATH . '/' . $module_folder . '/constants.php';
 
+		if ( file_exists($constants_file) ) {
+			require_once $constants_file;
+		}
+
 		$toolkit = new kInstallToolkit();
 	}
 	else {