diff --git a/src/list.js b/src/list.js
index 2449375..53722e4 100644
--- a/src/list.js
+++ b/src/list.js
@@ -289,7 +289,7 @@ export const List = function(descriptor, label) {
   const type = typeOf(descriptor)
 
   if (type === Any) {
-    throw TypeError("Typed.List was passed an invalid type descriptor: ${descriptor}")
+    throw TypeError(`Typed.List was passed an invalid type descriptor: ${descriptor}`)
   }
 
   const ListType = function(value) {