diff --git a/lib/index.js b/lib/index.js
index 9bd1f94..9fa9d4b 100755
--- a/lib/index.js
+++ b/lib/index.js
@@ -212,7 +212,7 @@ internals.BoomOutput = class {
     constructor(statusCode, headers) {
 
         this.statusCode = statusCode;
-        this.headers = headers ? Hoek.clone(headers, { prototype: false, symbols: false }) : {};
+        this.headers = typeof headers === 'object' ? Hoek.clone(headers, { prototype: false, symbols: false }) : {};
     }
 };
 
diff --git a/test/index.js b/test/index.js
index 832af91..b1db734 100755
--- a/test/index.js
+++ b/test/index.js
@@ -90,6 +90,14 @@ describe('Boom', () => {
         expect(headers).to.equal({ custom: ['yes'] });
     });
 
+    it('ignores non-object headers option', () => {
+
+        const err = new Boom.Boom('fail', { statusCode: 400, headers: true });
+        expect(err.output.payload.message).to.equal('fail');
+        expect(err.output.statusCode).to.equal(400);
+        expect(err.output.headers).to.equal({});
+    });
+
     it('throws when statusCode is invalid', () => {
 
         expect(() => {