diff --git a/core/src/test/scala/caliban/validation/ValidationSchemaSpec.scala b/core/src/test/scala/caliban/validation/ValidationSchemaSpec.scala
index 9bdd3f332..dffbf5711 100644
--- a/core/src/test/scala/caliban/validation/ValidationSchemaSpec.scala
+++ b/core/src/test/scala/caliban/validation/ValidationSchemaSpec.scala
@@ -17,31 +17,7 @@ object ValidationSchemaSpec
         assertM(gql.interpreter.run, fails[ValidationError](hasField("msg", _.msg, equalTo(expectedMessage))))
 
       suite("ValidationSchemaSpec")({
-        def checkInputObject(
-          __type: __Type,
-          expectedMessage: String
-        ) = {
-          val validate = Validator.validateSchema(RootType(__Type(kind = SCALAR), Some(__type), None))
-          assertM(validate.run, fails[ValidationError](hasField("msg", _.msg, equalTo(expectedMessage))))
-        }
-
-        def inputValue(name: String, t: __Type): __InputValue =
-          __InputValue(name = name, `type` = () => t, description = None, defaultValue = None)
-
-        def inputObject(inputs: __InputValue*): __Type =
-          __Type(
-            name = Some("inputObject"),
-            kind = INPUT_OBJECT,
-            inputFields = Some(inputs.toList)
-          )
-
         suite("InputObjects")(
-          testM("any input field must have a unique name within an Input Object") {
-            checkInputObject(
-              inputObject(inputValue("duplicate", __Type(SCALAR)), inputValue("duplicate", __Type(SCALAR))),
-              "InputObject has repeated fields: duplicate"
-            )
-          },
           testM("name can't start with '__'") {
             check(
               graphQL(resolverWrongMutationUnderscore),