1 files changed, 4 insertions, 1 deletions
diff --git a/lib/handlebars/compiler/code-gen.js b/lib/handlebars/compiler/code-gen.js
index a7c1659..0fddb7c 100644
--- a/lib/handlebars/compiler/code-gen.js
+++ b/lib/handlebars/compiler/code-gen.js
@@ -113,7 +113,10 @@ CodeGen.prototype = {
 
     for (var key in obj) {
       if (obj.hasOwnProperty(key)) {
-        pairs.push([this.quotedString(key), ':', castChunk(obj[key], this)]);
+        var value = castChunk(obj[key], this);
+        if (value !== 'undefined') {
+          pairs.push([this.quotedString(key), ':', value]);
+        }
       }
     }