diff --git a/packages/aws-lambda/src/headers.test.ts b/packages/aws-lambda/src/headers.test.ts
index 5f6706b..2375845 100644
--- a/packages/aws-lambda/src/headers.test.ts
+++ b/packages/aws-lambda/src/headers.test.ts
@@ -189,11 +189,14 @@ describe('toLambdaHeaders', () => {
       'content-type': 'application/json',
       'x-custom': ['one', 'two'],
       'x-skipped': undefined,
+      'x-empty': [],
+      'x-empty-string': '',
       'set-cookie': ['foo=bar', 'bar=baz'],
     })).toEqual([
       {
         'content-type': 'application/json',
         'x-custom': 'one, two',
+        'x-empty-string': '',
       },
       ['foo=bar', 'bar=baz'],
     ])
diff --git a/packages/aws-lambda/src/headers.ts b/packages/aws-lambda/src/headers.ts
index 570f390..58cb481 100644
--- a/packages/aws-lambda/src/headers.ts
+++ b/packages/aws-lambda/src/headers.ts
@@ -104,7 +104,7 @@ export function toLambdaHeaders(standardHeaders: StandardHeaders): [
 
   for (const key of Object.keys(standardHeaders)) {
     const value = standardHeaders[key]
-    if (value === undefined) {
+    if (value === undefined || (Array.isArray(value) && value.length === 0)) {
       continue
     }