1 files changed, 1 insertions, 1 deletions
diff --git a/lib/models/templateBlock.js b/lib/models/templateBlock.js
index 999898c..4e47da7 100644
--- a/lib/models/templateBlock.js
+++ b/lib/models/templateBlock.js
@@ -77,7 +77,7 @@ TemplateBlock.prototype.toNunjucksExt = function(mainContext) {
     var that = this;
     var name = this.getName();
     var endTag = this.getEndTag();
-    var blocks = this.getBlocks();
+    var blocks = this.getBlocks().toJS();
 
     function Ext() {
         this.tags = [name];