diff --git a/packages/react-native/Libraries/Components/TextInput/TextInput.js b/packages/react-native/Libraries/Components/TextInput/TextInput.js
index 6f7454c155774e..55451b9772f18c 100644
--- a/packages/react-native/Libraries/Components/TextInput/TextInput.js
+++ b/packages/react-native/Libraries/Components/TextInput/TextInput.js
@@ -1535,12 +1535,10 @@ function InternalTextInput(props: Props): React.Node {
     };
   }
 
-  const style = flattenStyle<TextStyleProp>(props.style);
-
+  let style = flattenStyle<TextStyleProp>(props.style);
   if (typeof style?.fontWeight === 'number') {
-    // $FlowFixMe[prop-missing]
-    // $FlowFixMe[cannot-write]
-    style.fontWeight = style?.fontWeight.toString();
+    // $FlowFixMe
+    style = [style, {fontWeight: style.fontWeight.toString()}];
   }
 
   if (Platform.OS === 'ios') {