diff --git a/Tests/GraphitiTests/HelloWorldTests/HelloWorldTests.swift b/Tests/GraphitiTests/HelloWorldTests/HelloWorldTests.swift
index 381c8ac..9bba4d7 100644
--- a/Tests/GraphitiTests/HelloWorldTests/HelloWorldTests.swift
+++ b/Tests/GraphitiTests/HelloWorldTests/HelloWorldTests.swift
@@ -271,7 +271,7 @@ class HelloWorldTests: XCTestCase {
         wait(for: [expectationB], timeout: 10)
 
         query = """
-        query Query($id: String!) {
+        query Query($id: ID!) {
             id(id: $id)
         }
         """