diff --git a/src/cache/tagStats.js b/src/cache/tagStats.js
index 0d78ea52c..8eb97e182 100644
--- a/src/cache/tagStats.js
+++ b/src/cache/tagStats.js
@@ -21,7 +21,7 @@ var ticketSchema = require('../models/ticket')
 var init = function (tickets, timespan, callback) {
   var tags = []
   var $tickets = []
-  if (_.isUndefined(timespan) || _.isNaN(timespan) || timespan === 0) timespan = 99999
+  if (_.isUndefined(timespan) || _.isNaN(timespan) || timespan === 0) timespan = 365
 
   var today = moment()
     .hour(23)
@@ -89,6 +89,8 @@ var init = function (tickets, timespan, callback) {
           }).reverse()
         )
 
+        t = null
+
         return done()
       }
     ],
diff --git a/src/cache/ticketStats.js b/src/cache/ticketStats.js
index ca06e2867..e07729ea4 100644
--- a/src/cache/ticketStats.js
+++ b/src/cache/ticketStats.js
@@ -48,9 +48,12 @@ function buildGraphData (arr, days, callback) {
     obj.date = d.format('YYYY-MM-DD')
 
     obj.value = counted[obj.date] === undefined ? 0 : counted[obj.date]
+
     graphData.push(obj)
   }
 
+  counted = null
+
   return callback(graphData)
 }