diff --git a/src/treegen/ast-template.js b/src/treegen/ast-template.js
index 06771a716..84b589195 100644
--- a/src/treegen/ast-template.js
+++ b/src/treegen/ast-template.js
@@ -28,7 +28,7 @@ const nodeProto = {
             yield element;
           }
         }
-      } else if (isSyntax(value)) {
+      } else {
         if (isSyntax(value)) {
           yield value;
         }