diff --git a/administrator/components/com_config/model/application.php b/administrator/components/com_config/model/application.php
index 4abbbfaebc07c..bfac3e1c30eb3 100644
--- a/administrator/components/com_config/model/application.php
+++ b/administrator/components/com_config/model/application.php
@@ -459,6 +459,12 @@ private function writeConfigFile(Registry $config)
 			throw new RuntimeException(JText::_('COM_CONFIG_ERROR_WRITE_FAILED'));
 		}
 
+		// Invalidates the cached configuration file
+		if (function_exists('opcache_invalidate'))
+		{
+			opcache_invalidate($file);
+		}
+
 		// Attempt to make the file unwriteable if using FTP.
 		if (!$ftp['enabled'] && JPath::isOwner($file) && !JPath::setPermissions($file, '0444'))
 		{