diff --git a/main.js b/main.js
index 600f8df..a904a75 100644
--- a/main.js
+++ b/main.js
@@ -6,6 +6,9 @@ var Util = require('./'+(isDev ? 'src': 'dist')+'/util');
 
 var mainWindow = null;
 
+// Set log level to "debug" if NODE_ENV==devlopment
+if(isDev) Util.Logger.level = 'debug';
+
 // Quit when all windows are closed.
 app.on('window-all-closed', function() {
   app.quit();
@@ -41,11 +44,11 @@ app.on('ready', function() {
   });
 
   mainWindow.on('blur', function() {
-    Util.Logger.info('Focus loosed.');
+    Util.Logger.debug('Focus loosed.');
   });
 
   mainWindow.on('focus', function() {
-    Util.Logger.info('Focus gained.');
+    Util.Logger.debug('Focus gained.');
     mainWindow.show();
   });