diff --git a/src/rollup.js b/src/rollup.js
index f7a6674..11f1c68 100644
--- a/src/rollup.js
+++ b/src/rollup.js
@@ -2,11 +2,33 @@ import Promise from 'es6-promise/lib/es6-promise/promise.js';
 import { basename } from './utils/path.js';
 import { writeFile } from './utils/fs.js';
 import { keys } from './utils/object.js';
+import validateKeys from './utils/validateKeys.js';
 import SOURCEMAPPING_URL from './utils/sourceMappingURL.js';
 import Bundle from './Bundle.js';
 
 export const VERSION = '<@VERSION@>';
 
+const ALLOWED_KEYS = [
+	'entry',
+	'dest',
+	'plugins',
+	'external',
+	'onwarn',
+	'indent',
+	'format',
+	'moduleName',
+	'sourceMap',
+	'intro',
+	'outro',
+	'banner',
+	'footer',
+	'globals',
+	'transform',
+	'load',
+	'resolveId',
+	'resolveExternal'
+];
+
 export function rollup ( options ) {
 	if ( !options || !options.entry ) {
 		return Promise.reject( new Error( 'You must supply options.entry to rollup' ) );
@@ -16,6 +38,12 @@ export function rollup ( options ) {
 		return Promise.reject( new Error( 'The `transform`, `load`, `resolveId` and `resolveExternal` options are deprecated in favour of a unified plugin API. See https://github.com/rollup/rollup/wiki/Plugins for details' ) );
 	}
 
+	const error = validateKeys( options, ALLOWED_KEYS );
+
+	if ( error ) {
+		return Promise.reject( error );
+	}
+
 	const bundle = new Bundle( options );
 
 	return bundle.build().then( () => {
diff --git a/src/utils/validateKeys.js b/src/utils/validateKeys.js
new file mode 100644
index 0000000..3ff51cd
--- /dev/null
+++ b/src/utils/validateKeys.js
@@ -0,0 +1,17 @@
+import { keys } from './object.js';
+
+export default function validateKeys ( object, allowedKeys ) {
+	const actualKeys = keys( object );
+
+	let i = actualKeys.length;
+
+	while ( i-- ) {
+		const key = actualKeys[i];
+
+		if ( allowedKeys.indexOf( key ) === -1 ) {
+			return new Error(
+				`Unexpected key '${ key }' found, expected one of: ${ allowedKeys.join( ', ' ) }`
+			);
+		}
+	}
+}
diff --git a/test/test.js b/test/test.js
index bd76009..5ee72ba 100644
--- a/test/test.js
+++ b/test/test.js
@@ -69,6 +69,14 @@ describe( 'rollup', function () {
 				assert.equal( 'You must supply options.entry to rollup', err.message );
 			});
 		});
+
+		it( 'fails with invalid keys', function () {
+			return rollup.rollup({ entry: 'x', plUgins: [] }).then( function () {
+				throw new Error( 'Missing expected error' );
+			}, function ( err ) {
+				assert.equal( 'Unexpected key \'plUgins\' found, expected one of: entry, dest, plugins, external, onwarn, indent, format, moduleName, sourceMap, intro, outro, banner, footer, globals, transform, load, resolveId, resolveExternal', err.message );
+			});
+		});
 	});
 
 	describe( 'bundle.write()', function () {