diff --git a/src/compiler/visitor.ts b/src/compiler/visitor.ts
index eb28721a142..af18a5620c6 100644
--- a/src/compiler/visitor.ts
+++ b/src/compiler/visitor.ts
@@ -700,6 +700,8 @@ namespace ts {
 
             case SyntaxKind.TypeAliasDeclaration:
                 return updateTypeAliasDeclaration(<TypeAliasDeclaration>node,
+                    nodesVisitor((<TypeAliasDeclaration>node).decorators, visitor, isDecorator),
+                    nodesVisitor((<TypeAliasDeclaration>node).modifiers, visitor, isModifier),
                     visitNode((<TypeAliasDeclaration>node).name, visitor, isIdentifier),
                     nodesVisitor((<TypeAliasDeclaration>node).typeParameters, visitor, isTypeParameter),
                     visitNode((<TypeAliasDeclaration>node).type, visitor, isTypeNode));