diff --git a/symphony/content/content.systempreferences.php b/symphony/content/content.systempreferences.php
index <HASH>..<HASH> 100755
--- a/symphony/content/content.systempreferences.php
+++ b/symphony/content/content.systempreferences.php
@@ -210,7 +210,7 @@
 					}
 
 					Symphony::Configuration()->write();
-					if(function_exists('opcache_invalidate')) opcache_invalidate(CONFIG);
+					if(function_exists('opcache_invalidate')) opcache_invalidate(CONFIG, true);
 
 					redirect(SYMPHONY_URL . '/system/preferences/success/');
 				}
Force invalidation of config.php regardless of last modified value

Some filesystems may be set not to record last modified dates if I remember correctly. Even if not, forcing shouldn’t be a problem and seems safest.