diff --git a/src/services/formatting/rules.ts b/src/services/formatting/rules.ts
index 2095f062bd1..89250820c7c 100644
--- a/src/services/formatting/rules.ts
+++ b/src/services/formatting/rules.ts
@@ -829,6 +829,7 @@ namespace ts.formatting {
             switch (parent.kind) {
                 case SyntaxKind.TypeReference:
                 case SyntaxKind.TypeAssertionExpression:
+                case SyntaxKind.TypeAliasDeclaration:
                 case SyntaxKind.ClassDeclaration:
                 case SyntaxKind.ClassExpression:
                 case SyntaxKind.InterfaceDeclaration: