diff --git a/maintenance/fetchInterwiki.pl b/maintenance/fetchInterwiki.pl
index a4ff14a0312..cb56a6df477 100644
--- a/maintenance/fetchInterwiki.pl
+++ b/maintenance/fetchInterwiki.pl
@@ -11,7 +11,6 @@ my $map = &get(&url('http://usemod.com/intermap.txt'));
 my $cont;
 my @map = split /\n/, $map;
 
-open IW, ">Interwiki.php";
 $cont .= '<?php
 # Note: this file is generated by maintenance/fetchInterwiki.pl
 # Edit and rerun that script rather than modifying this directly.