diff --git a/install/steps/7-finish.php b/install/steps/7-finish.php
index 0ae302ea..afe63603 100644
--- a/install/steps/7-finish.php
+++ b/install/steps/7-finish.php
@@ -195,13 +195,4 @@ if(!isset($_SESSION['installed'])) {
 	$_SESSION['installed'] = true;
 }
 
-foreach($_SESSION as $key => $value) {
-	if(strpos($key, 'var_') !== false)
-		unset($_SESSION[$key]);
-}
-unset($_SESSION['saved']);
-if(file_exists(CACHE . 'install.txt')) {
-	unlink(CACHE . 'install.txt');
-}
-
 $hooks->trigger(HOOK_INSTALL_FINISH_END);
diff --git a/install/tools/5-database.php b/install/tools/5-database.php
index 395492ee..b9ff587f 100644
--- a/install/tools/5-database.php
+++ b/install/tools/5-database.php
@@ -7,6 +7,11 @@ require SYSTEM . 'functions.php';
 require BASE . 'install/includes/functions.php';
 require BASE . 'install/includes/locale.php';
 
+if(isset($config['installed']) && $config['installed'] && !isset($_SESSION['saved'])) {
+	warning($locale['already_installed']);
+	return;
+}
+
 $error = false;
 require BASE . 'install/includes/config.php';
 
diff --git a/install/tools/7-finish.php b/install/tools/7-finish.php
index c1ab5c1d..9c64382b 100644
--- a/install/tools/7-finish.php
+++ b/install/tools/7-finish.php
@@ -17,11 +17,11 @@ ini_set('max_execution_time', 300);
 ob_implicit_flush();
 
 header('X-Accel-Buffering: no');
-/*
+
 if(isset($config['installed']) && $config['installed'] && !isset($_SESSION['saved'])) {
 	warning($locale['already_installed']);
 	return;
-}*/
+}
 
 require SYSTEM . 'init.php';
 
@@ -94,6 +94,17 @@ $hooks->trigger(HOOK_INSTALL_FINISH);
 
 $db->setClearCacheAfter(true);
 
+// cleanup
+foreach($_SESSION as $key => $value) {
+	if(str_contains($key, 'var_')) {
+		unset($_SESSION[$key]);
+	}
+}
+unset($_SESSION['saved']);
+if(file_exists(CACHE . 'install.txt')) {
+	unlink(CACHE . 'install.txt');
+}
+
 $locale['step_finish_desc'] = str_replace('$ADMIN_PANEL$', generateLink(str_replace('tools/', '',ADMIN_URL), $locale['step_finish_admin_panel'], true), $locale['step_finish_desc']);
 $locale['step_finish_desc'] = str_replace('$HOMEPAGE$', generateLink(str_replace('tools/', '', BASE_URL), $locale['step_finish_homepage'], true), $locale['step_finish_desc']);
 $locale['step_finish_desc'] = str_replace('$LINK$', generateLink('https://my-aac.org', 'https://my-aac.org', true), $locale['step_finish_desc']);