diff --git a/dist/jszip.js b/dist/jszip.js
index 00bbec20..68ac5ba2 100644
--- a/dist/jszip.js
+++ b/dist/jszip.js
@@ -1,6 +1,6 @@
 /*!
 
-JSZip v3.3.0 - A JavaScript class for generating and reading zip files
+JSZip v3.4.0 - A JavaScript class for generating and reading zip files
 <http://stuartk.com/jszip>
 
 (c) 2009-2016 Stuart Knightley <stuart [at] stuartk.com>
diff --git a/dist/jszip.min.js b/dist/jszip.min.js
index cdeb7db4..59b993e8 100644
--- a/dist/jszip.min.js
+++ b/dist/jszip.min.js
@@ -1,6 +1,6 @@
 /*!
 
-JSZip v3.3.0 - A JavaScript class for generating and reading zip files
+JSZip v3.4.0 - A JavaScript class for generating and reading zip files
 <http://stuartk.com/jszip>
 
 (c) 2009-2016 Stuart Knightley <stuart [at] stuartk.com>
diff --git a/lib/zipEntry.js b/lib/zipEntry.js
index f204524e..6e6b9f39 100644
--- a/lib/zipEntry.js
+++ b/lib/zipEntry.js
@@ -200,6 +200,8 @@ ZipEntry.prototype = {
             this.extraFields = {};
         }
 
+        // Handle invalid extra fields
+        // https://github.com/Stuk/jszip/issues/543
         while (reader.index + 4 < end) {
             extraFieldId = reader.readInt(2);
             extraFieldLength = reader.readInt(2);