diff --git a/lib/vmpooler/pool_manager.rb b/lib/vmpooler/pool_manager.rb
index f2242ff..34a76b0 100644
--- a/lib/vmpooler/pool_manager.rb
+++ b/lib/vmpooler/pool_manager.rb
@@ -156,8 +156,14 @@ module Vmpooler
         $redis.hset('vmpooler__vm__' + vm, 'check', Time.now)
         # Check if the hosts TTL has expired
         if ttl > 0
-          # host['boottime'] may be nil if host is not powered on
-          if ((Time.now - host['boottime']) / 60).to_s[/^\d+\.\d{1}/].to_f > ttl
+          # 'boottime' may be nil if host is not powered on
+          boottime = $redis.hget("vmpooler__vm__#{vm}", 'ready')
+          if boottime
+            boottime = Time.parse(boottime)
+          else
+            boottime = Time.at(0)
+          end
+          if ((Time.now - boottime) / 60).to_s[/^\d+\.\d{1}/].to_f > ttl
             $redis.smove('vmpooler__ready__' + pool_name, 'vmpooler__completed__' + pool_name, vm)
 
             $logger.log('d', "[!] [#{pool_name}] '#{vm}' reached end of TTL after #{ttl} minutes, removed from 'ready' queue")