diff --git a/packages/react-native/Libraries/StyleSheet/__tests__/flattenStyle-test.js b/packages/react-native/Libraries/StyleSheet/__tests__/flattenStyle-test.js
index 8d5404e81d310f..c9629f2ce60f9c 100644
--- a/packages/react-native/Libraries/StyleSheet/__tests__/flattenStyle-test.js
+++ b/packages/react-native/Libraries/StyleSheet/__tests__/flattenStyle-test.js
@@ -77,12 +77,10 @@ describe('flattenStyle', () => {
     expect(nullStyle).toBe(style);
   });
 
-  it('should not allocate an object when there is a single class', () => {
+  it('should not change the attribute of an object when there is a single class', () => {
     const fixture = getFixture();
     const singleStyle = flattenStyle(fixture.elementA);
-    const singleStyleAgain = flattenStyle(fixture.elementA);
 
-    expect(singleStyle).toBe(singleStyleAgain);
     expect(singleStyle).toEqual({
       styleA: 'moduleA/elementA/styleA',
       styleB: 'moduleA/elementA/styleB',
diff --git a/packages/react-native/Libraries/StyleSheet/flattenStyle.js b/packages/react-native/Libraries/StyleSheet/flattenStyle.js
index fafaf8c13fee87..046deb055c3e4a 100644
--- a/packages/react-native/Libraries/StyleSheet/flattenStyle.js
+++ b/packages/react-native/Libraries/StyleSheet/flattenStyle.js
@@ -22,6 +22,10 @@ function flattenStyle<TStyleProp: DangerouslyImpreciseStyleProp>(
   }
 
   if (!Array.isArray(style)) {
+    if (Object.isFrozen(style)) {
+      // $FlowFixMe[incompatible-return]
+      return {...style};
+    }
     // $FlowFixMe[incompatible-return]
     return style;
   }