diff --git a/README.md b/README.md
index cdee25a..2b62e0d 100644
--- a/README.md
+++ b/README.md
@@ -11,7 +11,7 @@
 Mathlion is a Kibana extension that enables equation parsing and advanced math under Timelion.
 Check out what it can do in the [documentation](http://mathlion.docs.fermiumlabs.com/)
 
-### Installation
+### Installation 
 
 Copy the last installation url for your version of Kibana from [the repository releases](https://github.com/fermiumlabs/mathlion/releases/latest). The file follows the naming `mathlion-major.minor.patch_for_kibana-major.minor.patch.zip` where the first version is the one of mathlion, the second version indicated it's the one in Kibana.
 
diff --git a/functions/enviroment/math-enviroment.js b/functions/enviroment/math-enviroment.js
index 9240453..5d39d75 100644
--- a/functions/enviroment/math-enviroment.js
+++ b/functions/enviroment/math-enviroment.js
@@ -28,7 +28,7 @@ module.exports.exists = function (envName) {
 var interval = setInterval (function (enviroment) {
   var now = Date.now() / 1000;
   for (var key in enviroment) {
-    if (typeof enviroment[key] !== 'function' && now - enviroment[key].last_request > 10) {
+    if (typeof enviroment[key] !== 'function' && now - enviroment[key].last_request > 120) {
       delete enviroment[key];
     }
   }