diff --git a/src/parser.js b/src/parser.js
index 90861ac2..0b2cca28 100644
--- a/src/parser.js
+++ b/src/parser.js
@@ -337,7 +337,7 @@ var Parser = Object.extend({
         }
 
         var node = new nodeType(tag.lineno, tag.colno);
-        node.template = this.parsePrimary();
+        node.template = this.parseExpression();
 
         this.advanceAfterBlockEnd(tag.value);
         return node;