diff --git a/upload/source/admincp/admincp_plugins.php b/upload/source/admincp/admincp_plugins.php
index ebe3b2e4753a5a78ada772a31ee2c6bc9ea6c32e..a776f86fc8fc5991e7d1fc077747074544e16cbf 100644
--- a/upload/source/admincp/admincp_plugins.php
+++ b/upload/source/admincp/admincp_plugins.php
@@ -638,7 +638,7 @@ if(!$operation) {
 		pluginupgrade($pluginarray, $installtype);
 
 		if(!empty($plugin['directory']) && !empty($pluginarray['upgradefile']) && preg_match('/^[\w\.]+$/', $pluginarray['upgradefile'])) {
-			dheader('location: '.ADMINSCRIPT.'?action=plugins&operation=pluginupgrade&dir='.$dir.'&installtype='.$modules['extra']['installtype'].'&fromversion='.$plugin['version']);
+			dheader('location: '.ADMINSCRIPT.'?action=plugins&operation=pluginupgrade&dir='.$dir.'&installtype='.$installtype.'&fromversion='.$plugin['version']);
 		}
 		$toversion = $pluginarray['plugin']['version'];