diff --git a/qrss-export b/qrss-export
index 5bb781b..f238332 100755
--- a/qrss-export
+++ b/qrss-export
@@ -108,7 +108,7 @@ while (1) {
   if ($a eq 'l') {
     list_feeds();
   } elsif ($a eq 'f') {
-    $opts->{F} = prompt('a', 'Filter by URL', '', 'example.com', '');
+    $opts->{F} = prompt('x', 'Filter by URL', '', 'example.com', '');
   } elsif ($a eq 'e') {
     my $fid = prompt('n', 'feed id:', '', '');
     export_feed($fid);