diff --git a/src/http/HttpResponse.ts b/src/http/HttpResponse.ts
index a71d43c..53b4027 100644
--- a/src/http/HttpResponse.ts
+++ b/src/http/HttpResponse.ts
@@ -6,7 +6,6 @@ import { HttpResponseInit } from '@azure/functions';
 import { Blob } from 'buffer';
 import { ReadableStream } from 'stream/web';
 import { FormData, Headers, Response as uResponse, ResponseInit as uResponseInit } from 'undici';
-import { isDefined } from '../utils/nonNull';
 
 interface InternalHttpResponseInit extends HttpResponseInit {
     undiciResponse?: uResponse;
@@ -27,7 +26,7 @@ export class HttpResponse implements types.HttpResponse {
             this.#uRes = init.undiciResponse;
         } else {
             const uResInit: uResponseInit = { status: init.status, headers: init.headers };
-            if (isDefined(init.jsonBody)) {
+            if (init.jsonBody !== undefined) {
                 this.#uRes = uResponse.json(init.jsonBody, uResInit);
             } else {
                 this.#uRes = new uResponse(init.body, uResInit);
diff --git a/test/converters/toRpcHttp.test.ts b/test/converters/toRpcHttp.test.ts
index bbc056f..7d928ba 100644
--- a/test/converters/toRpcHttp.test.ts
+++ b/test/converters/toRpcHttp.test.ts
@@ -54,6 +54,21 @@ describe('toRpcHttp', () => {
         );
     });
 
+    it('response class json null', async () => {
+        const result = await toRpcHttp('invocId', new HttpResponse({ jsonBody: null }));
+        expect(result).to.deep.equal(getExpectedRpcHttp('null', jsonHeaders));
+    });
+
+    it('response class json boolean false', async () => {
+        const result = await toRpcHttp('invocId', new HttpResponse({ jsonBody: false }));
+        expect(result).to.deep.equal(getExpectedRpcHttp('false', jsonHeaders));
+    });
+
+    it('response class json number zero', async () => {
+        const result = await toRpcHttp('invocId', new HttpResponse({ jsonBody: 0 }));
+        expect(result).to.deep.equal(getExpectedRpcHttp('0', jsonHeaders));
+    });
+
     it('undefined', async () => {
         const result = await toRpcHttp('invocId', {});
         expect(result).to.deep.equal(getExpectedRpcHttp('', {}));
diff --git a/types/InvocationContext.d.ts b/types/InvocationContext.d.ts
index 8815bdf..c991557 100644
--- a/types/InvocationContext.d.ts
+++ b/types/InvocationContext.d.ts
@@ -129,7 +129,7 @@ export interface InvocationContextExtraInputs {
      * @input the configuration object for this SQL input
      */
     get(input: SqlInput): unknown;
-	
+
     /**
      * Get a secondary MySql items input for this invocation
      * @input the configuration object for this MySql input
@@ -223,7 +223,7 @@ export interface InvocationContextExtraOutputs {
      * @message the output event(s) value
      */
     set(output: EventGridOutput, events: EventGridPartialEvent | EventGridPartialEvent[]): void;
-	
+
     /**
      * Set a secondary MySql items output for this invocation
      * @output the configuration object for this MySql output
diff --git a/types/input.d.ts b/types/input.d.ts
index 52d8c68..b264405 100644
--- a/types/input.d.ts
+++ b/types/input.d.ts
@@ -4,10 +4,10 @@
 import { CosmosDBInput, CosmosDBInputOptions } from './cosmosDB';
 import { GenericInputOptions } from './generic';
 import { FunctionInput } from './index';
+import { MySqlInput, MySqlInputOptions } from './mySql';
 import { SqlInput, SqlInputOptions } from './sql';
 import { StorageBlobInput, StorageBlobInputOptions } from './storage';
 import { TableInput, TableInputOptions } from './table';
-import { MySqlInput, MySqlInputOptions } from './mySql';
 import {
     WebPubSubConnectionInput,
     WebPubSubConnectionInputOptions,
diff --git a/types/output.d.ts b/types/output.d.ts
index b9d9d83..e9e08d9 100644
--- a/types/output.d.ts
+++ b/types/output.d.ts
@@ -7,6 +7,7 @@ import { EventHubOutput, EventHubOutputOptions } from './eventHub';
 import { GenericOutputOptions } from './generic';
 import { HttpOutput, HttpOutputOptions } from './http';
 import { FunctionOutput } from './index';
+import { MySqlOutput, MySqlOutputOptions } from './mySql';
 import {
     ServiceBusQueueOutput,
     ServiceBusQueueOutputOptions,
@@ -16,7 +17,6 @@ import {
 import { SqlOutput, SqlOutputOptions } from './sql';
 import { StorageBlobOutput, StorageBlobOutputOptions, StorageQueueOutput, StorageQueueOutputOptions } from './storage';
 import { TableOutput, TableOutputOptions } from './table';
-import { MySqlOutput, MySqlOutputOptions } from './mySql';
 import { WebPubSubOutput, WebPubSubOutputOptions } from './webpubsub';
 
 /**