diff --git a/packages/perseus/src/widgets/sorter/sorter-validator.test.ts b/packages/perseus/src/widgets/sorter/sorter-validator.test.ts
index 41ae9ac38f..4d14854049 100644
--- a/packages/perseus/src/widgets/sorter/sorter-validator.test.ts
+++ b/packages/perseus/src/widgets/sorter/sorter-validator.test.ts
@@ -5,7 +5,8 @@ import type {Rubric, UserInput} from "./sorter.types";
 describe("SorterValidator", () => {
     it("is correct when the user input values are in the order defined in the rubric", () => {
         const userInput: UserInput = {
-            values: ["$0.005$ kilograms", "$15$ grams", "$55$ grams"],
+            options: ["$0.005$ kilograms", "$15$ grams", "$55$ grams"],
+            changed: true,
         };
         const rubric: Rubric = {
             padding: true,
@@ -18,7 +19,8 @@ describe("SorterValidator", () => {
 
     it("is incorrect when the user input values are not in the order defined in the rubric", () => {
         const userInput: UserInput = {
-            values: ["$15$ grams", "$55$ grams", "$0.005$ kilograms"],
+            options: ["$15$ grams", "$55$ grams", "$0.005$ kilograms"],
+            changed: true,
         };
         const rubric: Rubric = {
             padding: true,
@@ -26,11 +28,20 @@ describe("SorterValidator", () => {
             correct: ["$0.005$ kilograms", "$15$ grams", "$55$ grams"],
         };
         const result = sorterValidator(userInput, rubric);
-        expect(result).toEqual({
-            type: "points",
-            earned: 0,
-            total: 1,
-            message: null,
-        });
+        expect(result).toHaveBeenAnsweredIncorrectly();
+    });
+
+    it("is invalid when the user has not made any changes", () => {
+        const userInput: UserInput = {
+            options: ["$15$ grams", "$55$ grams", "$0.005$ kilograms"],
+            changed: false,
+        };
+        const rubric: Rubric = {
+            padding: true,
+            layout: "horizontal",
+            correct: ["$0.005$ kilograms", "$15$ grams", "$55$ grams"],
+        };
+        const result = sorterValidator(userInput, rubric);
+        expect(result).toHaveInvalidInput();
     });
 });