diff --git a/package-lock.json b/package-lock.json
index 848f900..325ab14 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "adapcon-utils-js",
-  "version": "1.3.4",
+  "version": "1.3.5",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "adapcon-utils-js",
-      "version": "1.3.3",
+      "version": "1.3.5",
       "dependencies": {
         "@aws-sdk/client-dynamodb": "^3.496.0",
         "@aws-sdk/client-lambda": "^3.496.0",
diff --git a/package.json b/package.json
index a367ff1..ecd3612 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "adapcon-utils-js",
-  "version": "1.3.4",
+  "version": "1.3.5",
   "description": "Utils library for Javascript",
   "keywords": [],
   "author": {
diff --git a/src/lambda/interfaces.ts b/src/lambda/interfaces.ts
index f73f5cc..17aaf49 100644
--- a/src/lambda/interfaces.ts
+++ b/src/lambda/interfaces.ts
@@ -58,10 +58,10 @@ export type DocfySettings = {
 export type Docfy = {
   type: 'screen' | 'integration' | 'public' | 'session' | 'hybrid'
   description: string
-  pathParameters?: { [key: string]: Omit<DocfySettings, 'required'> }
-  queryStringParameters?: { [key: string]: DocfySettings }
-  headers?: { [key: string]: DocfySettings }
-  body?: { [key: string]: DocfySettings }
-  requestContext?: { [key: string]: DocfySettings }
-  fromEvent?: { [key: string]: DocfySettings }
+  pathParameters?: Record<string, Omit<DocfySettings, 'required'>>
+  queryStringParameters?: Record<string, DocfySettings>
+  headers?: Record<string, DocfySettings>
+  body?: Record<string, DocfySettings>
+  requestContext?: Record<string, DocfySettings>
+  fromEvent?: Record<string, DocfySettings>
 }
diff --git a/src/lambda/lambdaGetParameters.ts b/src/lambda/lambdaGetParameters.ts
index 8eb6f1a..2121635 100644
--- a/src/lambda/lambdaGetParameters.ts
+++ b/src/lambda/lambdaGetParameters.ts
@@ -46,15 +46,19 @@ const extractParams = (docfy: Docfy, parameter: string, evt: APIGatewayEvent) =>
   const params = {}
   const errs = {}
 
-  for (const [key, value] of Object.entries(docfy[parameter] ?? {}) as Array<[key: string, value: DocfySettings]>) {
-    const identity = value.translate ?? key
+  for (const [keyBase, value] of Object.entries(docfy[parameter] ?? {}) as Array<[key: string, value: DocfySettings]>) {
+    const key = parameter === 'headers' ? keyBase.toLowerCase() : keyBase
+
+    const identity = value.translate ?? keyBase
     const param = get(evt, `${parameter}.${key}`) ?? value.default
 
-    const alreadyExist = value.translate && !params[value.translate]
+    const hasParamValue = params[identity]
+    const hasValue = param && param !== 'undefined'
     const isRequired = value.required ?? parameter === 'pathParameters'
-    if (isRequired && !param && alreadyExist) {
-      errs[key] = `Missing(${parameter}) ${value.label}`
-    } else if (param !== 'undefined' && !params[identity]) {
+
+    if (isRequired && !hasValue && !hasParamValue) {
+      errs[keyBase] = `Missing(${parameter}) ${value.label}`
+    } else {
       params[identity] = param
     }
   }
diff --git a/src/s3/formatters.ts b/src/s3/formatters.ts
index 059207c..4f3e9b6 100644
--- a/src/s3/formatters.ts
+++ b/src/s3/formatters.ts
@@ -1,8 +1,9 @@
 import { Readable } from 'stream';
 
-export const streamToString = async (stream: Readable | ReadableStream | Blob) => new Promise((resolve, reject) => {
-  const chunks = []
-  stream.on('data', chunk => chunks.push(chunk))
+export const streamToString = async (stream: Readable) => new Promise((resolve, reject) => {
+  const chunks: any[] = []
+
+  stream.on('data', (chunk: any) => chunks.push(chunk))
   stream.on('error', reject)
   stream.on('end', () => resolve(Buffer.concat(chunks).toString('utf8')))
 })