diff --git a/packages/react-native-codegen/src/parsers/flow/modules/__test_fixtures__/failures.js b/packages/react-native-codegen/src/parsers/flow/modules/__test_fixtures__/failures.js
index b23a68ef556..6242d5b402e 100644
--- a/packages/react-native-codegen/src/parsers/flow/modules/__test_fixtures__/failures.js
+++ b/packages/react-native-codegen/src/parsers/flow/modules/__test_fixtures__/failures.js
@@ -159,54 +159,6 @@ export default TurboModuleRegistry.getEnforcing<Spec>('SampleTurboModule');
 
 `;
 
-const NATIVE_MODULE_NULLABLE_BOOLEAN = `
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- *
- * @flow
- * @format
- */
-
-'use strict';
-
-import type {TurboModule} from '../RCTExport';
-import * as TurboModuleRegistry from '../TurboModuleRegistry';
-
-export interface Spec extends TurboModule {
-  +getSth(a : ?boolean) => void
-}
-
-export default TurboModuleRegistry.getEnforcing<Spec>('SampleTurboModule');
-
-`;
-
-const NATIVE_MODULE_NULLABLE_NUMBER = `
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- *
- * @flow
- * @format
- */
-
-'use strict';
-
-import type {TurboModule} from '../RCTExport';
-import * as TurboModuleRegistry from '../TurboModuleRegistry';
-
-export interface Spec extends TurboModule {
-  +getSth(a : ?number) => void
-}
-
-export default TurboModuleRegistry.getEnforcing<Spec>('SampleTurboModule');
-
-`;
-
 const TWO_NATIVE_MODULES_EXPORTED_WITH_DEFAULT = `
 /**
  * Copyright (c) Facebook, Inc. and its affiliates.
@@ -260,8 +212,6 @@ module.exports = {
   NATIVE_MODULES_WITH_PROMISE_WITHOUT_TYPE,
   NATIVE_MODULES_WITH_ARRAY_WITH_NO_TYPE_FOR_CONTENT_AS_PARAM,
   NATIVE_MODULES_WITH_ARRAY_WITH_NO_TYPE_FOR_CONTENT,
-  NATIVE_MODULE_NULLABLE_BOOLEAN,
-  NATIVE_MODULE_NULLABLE_NUMBER,
   TWO_NATIVE_MODULES_EXPORTED_WITH_DEFAULT,
   NATIVE_MODULES_WITH_NOT_EXISTING_TYPE_AS_PARAM,
   NATIVE_MODULES_WITH_NOT_EXISTING_TYPE_AS_RETURN,
diff --git a/packages/react-native-codegen/src/parsers/flow/modules/__tests__/__snapshots__/module-parser-test.js.snap b/packages/react-native-codegen/src/parsers/flow/modules/__tests__/__snapshots__/module-parser-test.js.snap
index 6696de03398..07dc009fc4c 100644
--- a/packages/react-native-codegen/src/parsers/flow/modules/__tests__/__snapshots__/module-parser-test.js.snap
+++ b/packages/react-native-codegen/src/parsers/flow/modules/__tests__/__snapshots__/module-parser-test.js.snap
@@ -1,9 +1,5 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
-exports[`RN Codegen Flow Parser Fails with error message NATIVE_MODULE_NULLABLE_BOOLEAN 1`] = `"Booleans and numbers cannot be nullable for param \\"a in method \\"getSth\\"."`;
-
-exports[`RN Codegen Flow Parser Fails with error message NATIVE_MODULE_NULLABLE_NUMBER 1`] = `"Booleans and numbers cannot be nullable for param \\"a in method \\"getSth\\"."`;
-
 exports[`RN Codegen Flow Parser Fails with error message NATIVE_MODULES_WITH_ARRAY_WITH_NO_TYPE_FOR_CONTENT 1`] = `"Unsupported return type for getString: expected to find annotation for type of array contents"`;
 
 exports[`RN Codegen Flow Parser Fails with error message NATIVE_MODULES_WITH_ARRAY_WITH_NO_TYPE_FOR_CONTENT_AS_PARAM 1`] = `"Unsupported type for getString, param: \\"arg\\": expected to find annotation for type of array contents"`;
diff --git a/packages/react-native-codegen/src/parsers/flow/modules/methods.js b/packages/react-native-codegen/src/parsers/flow/modules/methods.js
index a544d210e4d..d96692ed197 100644
--- a/packages/react-native-codegen/src/parsers/flow/modules/methods.js
+++ b/packages/react-native-codegen/src/parsers/flow/modules/methods.js
@@ -201,12 +201,6 @@ function getTypeAnnotationForParam(
       };
     case 'NumberTypeAnnotation':
     case 'BooleanTypeAnnotation':
-      if (nullable) {
-        throw new Error(
-          `Booleans and numbers cannot be nullable for param "${paramName} in method "${name}".`,
-        );
-      }
-    // eslint-disable no-fallthrough
     case 'StringTypeAnnotation':
       return {
         nullable,