diff --git a/src/js/ripple/meta.js b/src/js/ripple/meta.js
index 05e69c9a..23d40b5c 100644
--- a/src/js/ripple/meta.js
+++ b/src/js/ripple/meta.js
@@ -25,6 +25,9 @@ function Meta(raw_data) {
       result.fieldsNew   = an.NewFields || {};
       result.fieldsFinal = an.FinalFields || {};
 
+      // getAffectedBooks will set this
+      // result.bookKey   = undefined;
+
       self.nodes.push(result);
     }
   });
@@ -151,6 +154,11 @@ Meta.prototype.getAffectedBooks = function () {
 
     var key = [ getsKey, paysKey ].join(':');
 
+    // Hell of a lot of work, so we are going to cache this. We can use this
+    // later to good effect in OrderBook.notify to make sure we only process
+    // pertinent offers.
+    an.bookKey = key;
+
     books.push(key);
   });
 
diff --git a/src/js/ripple/orderbook.js b/src/js/ripple/orderbook.js
index aa05418d..d51f3e72 100644
--- a/src/js/ripple/orderbook.js
+++ b/src/js/ripple/orderbook.js
@@ -15,7 +15,7 @@ var Amount       = require('./amount').Amount;
 var UInt160      = require('./uint160').UInt160;
 var Currency     = require('./currency').Currency;
 
-function OrderBook(remote, currency_gets, issuer_gets, currency_pays, issuer_pays) {
+function OrderBook(remote, currency_gets, issuer_gets, currency_pays, issuer_pays, key) {
   EventEmitter.call(this);
 
   var self            = this;
@@ -26,6 +26,7 @@ function OrderBook(remote, currency_gets, issuer_gets, currency_pays, issuer_pay
   this._currency_pays = currency_pays;
   this._issuer_pays   = issuer_pays;
   this._subs          = 0;
+  this._key           = key;
 
   // We consider ourselves synchronized if we have a current copy of the offers,
   // we are online and subscribed to updates.
@@ -187,7 +188,7 @@ OrderBook.prototype.notify = function (message) {
   var trade_pays = this.trade('pays');
 
   function handleTransaction(an) {
-    if (an.entryType !== 'Offer') return;
+    if (an.entryType !== 'Offer' || an.bookKey !== self._key) return;
 
     var i, l, offer;
 
@@ -202,6 +203,8 @@ OrderBook.prototype.notify = function (message) {
             if (deletedNode) {
               self._offers.splice(i, 1);
             } else {
+              // TODO: This assumes no fields are deleted, which is probably a
+              // safe assumption, but should be checked.
               extend(offer, an.fieldsFinal);
             }
             changed = true;
diff --git a/src/js/ripple/remote.js b/src/js/ripple/remote.js
index b961eab8..957eb5fb 100644
--- a/src/js/ripple/remote.js
+++ b/src/js/ripple/remote.js
@@ -1292,7 +1292,7 @@ Remote.prototype.book = function(currency_gets, issuer_gets, currency_pays, issu
   var book;
 
   if (!this._books.hasOwnProperty(key)) {
-    book = new OrderBook(this, currency_gets, issuer_gets, currency_pays, issuer_pays);
+    book = new OrderBook(this, currency_gets, issuer_gets, currency_pays, issuer_pays, key);
     if (book.is_valid()) {
       this._books[key] = book;
     }