diff --git a/src/utilities/buildClientSchema.ts b/src/utilities/buildClientSchema.ts
index 4e9117149d8..34b7f508780 100644
--- a/src/utilities/buildClientSchema.ts
+++ b/src/utilities/buildClientSchema.ts
@@ -143,7 +143,7 @@ export function buildClientSchema(
   }
 
   function getNamedType(
-    typeRef: IntrospectionNamedTypeRef<>,
+    typeRef: IntrospectionNamedTypeRef,
   ): GraphQLNamedType {
     const typeName = typeRef.name;
     if (!typeName) {