diff --git a/packages/utils/src/diff/normalizeDiffOptions.ts b/packages/utils/src/diff/normalizeDiffOptions.ts
index 80f5bd28952a..13f86339b7a5 100644
--- a/packages/utils/src/diff/normalizeDiffOptions.ts
+++ b/packages/utils/src/diff/normalizeDiffOptions.ts
@@ -30,7 +30,7 @@ function getDefaultOptions(): DiffOptionsNormalized {
     compareKeys: undefined,
     contextLines: DIFF_CONTEXT_DEFAULT,
     emptyFirstOrLastLinePlaceholder: '',
-    expand: true,
+    expand: false,
     includeChangeCounts: false,
     omitAnnotationLines: false,
     patchColor: c.yellow,
diff --git a/test/config/test/__snapshots__/diff.test.ts.snap b/test/config/test/__snapshots__/diff.test.ts.snap
index 97d53a7cb4ec..dc16194cb39c 100644
--- a/test/config/test/__snapshots__/diff.test.ts.snap
+++ b/test/config/test/__snapshots__/diff.test.ts.snap
@@ -1,12 +1,11 @@
 // Vitest Snapshot v1, https://vitest.dev/guide/snapshot.html
 
-exports[`inline diff options: { expand: false, printBasicPrototype: true } 1`] = `
+exports[`inline diff options: { expand: true } 1`] = `
 [
   "- Expected
 + Received
 
-@@ -1,7 +1,7 @@
-  Array [
+  [
 -   1000,
 +   0,
     1,
@@ -14,7 +13,10 @@ exports[`inline diff options: { expand: false, printBasicPrototype: true } 1`] =
     3,
     4,
     5,
-@@ -12,11 +12,11 @@
+    6,
+    7,
+    8,
+    9,
     10,
     11,
     12,
@@ -27,7 +29,9 @@ exports[`inline diff options: { expand: false, printBasicPrototype: true } 1`] =
     18,
     19,
     20,
-@@ -26,7 +26,7 @@
+    21,
+    22,
+    23,
     24,
     25,
     26,
@@ -39,13 +43,13 @@ exports[`inline diff options: { expand: false, printBasicPrototype: true } 1`] =
   "- Expected
 + Received
 
-  Object {
-    "arr": Array [
+  {
+    "arr": [
       1,
 -     3,
 +     2,
     ],
-    "obj": Object {
+    "obj": {
 -     "k": "bar",
 +     "k": "foo",
     },
@@ -53,12 +57,13 @@ exports[`inline diff options: { expand: false, printBasicPrototype: true } 1`] =
 ]
 `;
 
-exports[`inline diff options: undefined 1`] = `
+exports[`inline diff options: { printBasicPrototype: true } 1`] = `
 [
   "- Expected
 + Received
 
-  [
+@@ -1,7 +1,7 @@
+  Array [
 -   1000,
 +   0,
     1,
@@ -66,10 +71,7 @@ exports[`inline diff options: undefined 1`] = `
     3,
     4,
     5,
-    6,
-    7,
-    8,
-    9,
+@@ -12,11 +12,11 @@
     10,
     11,
     12,
@@ -82,9 +84,7 @@ exports[`inline diff options: undefined 1`] = `
     18,
     19,
     20,
-    21,
-    22,
-    23,
+@@ -26,7 +26,7 @@
     24,
     25,
     26,
@@ -96,13 +96,13 @@ exports[`inline diff options: undefined 1`] = `
   "- Expected
 + Received
 
-  {
-    "arr": [
+  Object {
+    "arr": Array [
       1,
 -     3,
 +     2,
     ],
-    "obj": {
+    "obj": Object {
 -     "k": "bar",
 +     "k": "foo",
     },
diff --git a/test/config/test/diff.test.ts b/test/config/test/diff.test.ts
index 5332c80705d5..95016e7bbb47 100644
--- a/test/config/test/diff.test.ts
+++ b/test/config/test/diff.test.ts
@@ -3,8 +3,8 @@ import { expect, test } from 'vitest'
 import { runVitest } from '../../test-utils'
 
 test.for([
-  [undefined],
-  [{ expand: false, printBasicPrototype: true }],
+  [{ expand: true }],
+  [{ printBasicPrototype: true }],
 ])(`inline diff options: %o`, async ([options]) => {
   const { ctx } = await runVitest({
     root: './fixtures/diff',
diff --git a/test/core/test/jest-expect.test.ts b/test/core/test/jest-expect.test.ts
index e473c8d586f8..5734b5a135f7 100644
--- a/test/core/test/jest-expect.test.ts
+++ b/test/core/test/jest-expect.test.ts
@@ -1618,7 +1618,7 @@ function snapshotError(f: () => unknown) {
     f()
   }
   catch (error) {
-    const e = processError(error)
+    const e = processError(error, { expand: true })
     expect({
       message: stripVTControlCharacters(e.message),
       diff: e.diff ? stripVTControlCharacters(e.diff) : e.diff,