From a2b28cba965e41052af1387e8a172533e9294ec5 Mon Sep 17 00:00:00 2001
From: Rob Emery <mintsoft@users.noreply.github.com>
Date: Fri, 25 Aug 2017 18:13:58 +0100
Subject: [PATCH] AltCalendars: keys on ref is fatal under perl 5.24 (#4418)

---
 lib/DDG/Goodie/AltCalendars.pm | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/DDG/Goodie/AltCalendars.pm b/lib/DDG/Goodie/AltCalendars.pm
index 71327f29502..7e1c8636028 100755
--- a/lib/DDG/Goodie/AltCalendars.pm
+++ b/lib/DDG/Goodie/AltCalendars.pm
@@ -15,7 +15,7 @@ my $year_definitions = decode_json($definitions_json);
 my %year_map_with_aliases = map { 
   my $name = $_; 
   map { $_ => $name } ($name, @{$year_definitions->{$name}->{'aliases'} // []}) 
-} (keys $year_definitions);
+} (keys %{$year_definitions});
 
 triggers any => keys %year_map_with_aliases;