diff --git a/lib/6to5/transformation/transformers/es6-classes.js b/lib/6to5/transformation/transformers/es6-classes.js
index d87aaa401f..69d3a41205 100644
--- a/lib/6to5/transformation/transformers/es6-classes.js
+++ b/lib/6to5/transformation/transformers/es6-classes.js
@@ -11,7 +11,7 @@ exports.ClassExpression = function (node, parent, file, scope) {
   if (!node.id) {
     if (t.isProperty(parent) && parent.value === node && !parent.computed && t.isIdentifier(parent.key)) {
       // var o = { foo: class {} };
-      node.id = parent.key
+      node.id = parent.key;
     }
 
     if (t.isVariableDeclarator(parent)) {