diff --git a/install.php b/install.php
index 467027259..685d3b4ee 100644
--- a/install.php
+++ b/install.php
@@ -12,10 +12,6 @@
 
 /**
  * Global flag to indicate the site is in installation mode.
- *
- * The constant is defined using define() instead of const so that PHP
- * versions prior to 5.3 can display proper PHP requirements instead of causing
- * a fatal error.
  */
 define('MAINTENANCE_MODE', 'install');