diff --git a/src/compiler/utilities.ts b/src/compiler/utilities.ts
index 2966af3cb76..da33c18dfb8 100644
--- a/src/compiler/utilities.ts
+++ b/src/compiler/utilities.ts
@@ -1412,7 +1412,7 @@ namespace ts {
     }
 
     // True if the given identifier, string literal, or number literal is the name of a declaration node
-    export function isDeclarationName(name: Node): name is Identifier | StringLiteral | LiteralExpression {
+    export function isDeclarationName(name: Node): boolean {
         if (name.kind !== SyntaxKind.Identifier && name.kind !== SyntaxKind.StringLiteral && name.kind !== SyntaxKind.NumericLiteral) {
             return false;
         }