diff --git a/builds/appchan-x.user.js b/builds/appchan-x.user.js
index 0e6711d66..0007dc354 100644
--- a/builds/appchan-x.user.js
+++ b/builds/appchan-x.user.js
@@ -11924,10 +11924,18 @@
       });
     },
     node: function() {
+      var x;
       MarkNewIPs.ipCount = this.ipCount;
-      MarkNewIPs.postIDs = this.posts.keys.map(function(x) {
-        return +x;
-      });
+      MarkNewIPs.postIDs = (function() {
+        var _i, _len, _ref, _results;
+        _ref = this.post.keys;
+        _results = [];
+        for (_i = 0, _len = _ref.length; _i < _len; _i++) {
+          x = _ref[_i];
+          _results.push(+x);
+        }
+        return _results;
+      }).call(this);
       return $.on(d, 'ThreadUpdate', MarkNewIPs.onUpdate);
     },
     onUpdate: function(e) {
diff --git a/builds/crx/script.js b/builds/crx/script.js
index a56929715..d300b0aef 100644
--- a/builds/crx/script.js
+++ b/builds/crx/script.js
@@ -11913,10 +11913,18 @@
       });
     },
     node: function() {
+      var x;
       MarkNewIPs.ipCount = this.ipCount;
-      MarkNewIPs.postIDs = this.posts.keys.map(function(x) {
-        return +x;
-      });
+      MarkNewIPs.postIDs = (function() {
+        var _i, _len, _ref, _results;
+        _ref = this.post.keys;
+        _results = [];
+        for (_i = 0, _len = _ref.length; _i < _len; _i++) {
+          x = _ref[_i];
+          _results.push(+x);
+        }
+        return _results;
+      }).call(this);
       return $.on(d, 'ThreadUpdate', MarkNewIPs.onUpdate);
     },
     onUpdate: function(e) {
diff --git a/src/Monitoring/MarkNewIPs.coffee b/src/Monitoring/MarkNewIPs.coffee
index 5be46cd26..58c4b5975 100644
--- a/src/Monitoring/MarkNewIPs.coffee
+++ b/src/Monitoring/MarkNewIPs.coffee
@@ -7,7 +7,7 @@ MarkNewIPs =
 
   node: ->
     MarkNewIPs.ipCount = @ipCount
-    MarkNewIPs.postIDs = @posts.keys.map (x) -> +x
+    MarkNewIPs.postIDs = (+x for x in @post.keys)
     $.on d, 'ThreadUpdate', MarkNewIPs.onUpdate
 
   onUpdate: (e) ->