diff --git a/lib/common.js b/lib/common.js
index f89cc80..0dabe85 100755
--- a/lib/common.js
+++ b/lib/common.js
@@ -116,13 +116,13 @@ function longAgo(when, now) {
     var seconds = Math.round((now - when) / 1000);
     var times = [
         seconds / 60 / 60 / 24 / 365, // years
-        seconds / 60 / 60 / 24 / 30,  // months
+        seconds / 60 / 60 / 24 / 7,   // weeks
         seconds / 60 / 60 / 24,       // days
         seconds / 60 / 60,            // hours
         seconds / 60,                 // minutes
         seconds                       // seconds
     ];
-    var names = ['y', 'mon', 'd', 'h', 'min', 's'];
+    var names = ['y', 'w', 'd', 'h', 'm', 's'];
 
     for (var i = 0; i < names.length; i++) {
         var time = Math.floor(times[i]);