diff --git a/install/lib/installer_base.lib.php b/install/lib/installer_base.lib.php
index b1a7796d01d7f9c9f2e052a5a240da2cd38c96c0..0ebe0cbdd1cdd294fa2860dadb6605cfc0e0f488 100644
--- a/install/lib/installer_base.lib.php
+++ b/install/lib/installer_base.lib.php
@@ -250,7 +250,7 @@ class installer_base {
 				die();
 			}
 
-			$unwanted_sql_plugins = [''];
+			$unwanted_sql_plugins = array('');
 		} else {
 			$unwanted_sql_plugins = array('validate_password');
 		}