diff --git a/src/__tests__/http-test.js b/src/__tests__/http-test.js
index 2424b3bd..729045e3 100644
--- a/src/__tests__/http-test.js
+++ b/src/__tests__/http-test.js
@@ -1523,7 +1523,7 @@ describe('test harness', () => {
             {
               locations: [{ column: 16, line: 1 }],
               message:
-                'Variable "$who" got invalid value ["Dolly","Jonty"]; Expected type String; String cannot represent an array value: [Dolly,Jonty]',
+                'Variable "$who" got invalid value ["Dolly", "Jonty"]; Expected type String; String cannot represent a non string value: ["Dolly", "Jonty"]',
             },
           ],
         });