diff --git a/packages/react-native/scripts/codegen/generate-specs-cli-executor.js b/packages/react-native/scripts/codegen/generate-specs-cli-executor.js
index daae945a196..ece43d63b21 100644
--- a/packages/react-native/scripts/codegen/generate-specs-cli-executor.js
+++ b/packages/react-native/scripts/codegen/generate-specs-cli-executor.js
@@ -80,6 +80,7 @@ function generateSpecFromInMemorySchema(
       schema,
       outputDirectory,
       packageName,
+      assumeNonnull: platform === 'ios',
       useLocalIncludePaths,
     },
     {