diff --git a/migrations/20130307_normalize_algo_values.js b/migrations/20130307_normalize_algo_values.js
new file mode 100644
index 0000000000..116627251e
--- /dev/null
+++ b/migrations/20130307_normalize_algo_values.js
@@ -0,0 +1,47 @@
+// mongo habitrpg ./node_modules/underscore/underscore.js ./migrations/20130307_normalize_algo_values.js
+
+/**
+ * Users were experiencing a lot of extreme Exp multiplication (https://github.com/lefnire/habitrpg/issues/594).
+ * This sets things straight, and in preparation for another algorithm overhaul
+ */
+db.users.find().forEach(function(user){
+    if (user.stats.exp >= 3580) {
+        user.stats.exp = 0
+    }
+
+    if (user.stats.lvl > 100) {
+        user.stats.lvl = 100
+    }
+
+    _.each(user.tasks, function(task, key){
+        // remove corrupt tasks
+        if (!task) {
+            delete user.tasks[key]
+            return
+        }
+
+        // Fix busted values
+        if (task.value > 21.27) {
+            task.value = 21.27
+        }
+        else if (task.value < -47.27) {
+            task.value = -47.27
+        }
+    });
+
+    try {
+        db.users.update(
+            {_id:user._id},
+            {$set:
+                {
+                'stats.lvl': user.stats.lvl,
+                'stats.exp': user.stats.exp,
+                'tasks' : user.tasks
+                }
+            },
+            {multi:true}
+        );
+    } catch(e) {
+        print(e);
+    }
+})
\ No newline at end of file