diff --git a/byob.js b/byob.js
index 86b6b4b8..1c2cfeef 100644
--- a/byob.js
+++ b/byob.js
@@ -106,7 +106,7 @@ SymbolMorph, isNil*/
 
 // Global stuff ////////////////////////////////////////////////////////
 
-modules.byob = '2015-May-21';
+modules.byob = '2015-May-23';
 
 // Declarations
 
@@ -3301,13 +3301,13 @@ BlockExportDialogMorph.prototype.exportBlocks = function () {
         this.serializer.serialize(this.blocks)
     );
     if (this.blocks.length > 0) {
-        window.open(encodeURI('data:text/xml,<blocks app="'
+        window.open('data:text/xml,<blocks app="'
             + this.serializer.app
             + '" version="'
             + this.serializer.version
             + '">'
             + str
-            + '</blocks>'));
+            + '</blocks>');
     } else {
         new DialogBoxMorph().inform(
             'Export blocks',
diff --git a/history.txt b/history.txt
index 8e6a8fc2..29c56e5e 100755
--- a/history.txt
+++ b/history.txt
@@ -2508,3 +2508,7 @@ ______
 150521
 ------
 * BYOB: Fix encoding for exported libraries of global blocks
+
+150523
+------
+* BYOB: Fix encoding glitch