diff --git a/app/models/heartbeat.rb b/app/models/heartbeat.rb
index f369636..acf266b 100644
--- a/app/models/heartbeat.rb
+++ b/app/models/heartbeat.rb
@@ -14,7 +14,8 @@ def initialize
   end
 
   def memcached_up?
-    memcached_client = Dalli::Client.new(ENV["MEMCACHE_SERVERS"])
+    host = ENV["MEMCACHE_SERVERS"] || ENV["HOSTNAME"]
+    memcached_client = Dalli::Client.new("#{host}:11211")
     memcached_client.alive!
     true
   rescue