diff --git a/src/options-validator.js b/src/options-validator.js
index e549f8d8..717d592b 100644
--- a/src/options-validator.js
+++ b/src/options-validator.js
@@ -1,9 +1,11 @@
 import joi from 'joi';
 import * as hoek from '@hapi/hoek';
 
+import languagePluginsSchema from './language/schema';
+
 export function validate(options) {
   const schema = joi.object({
-    languages: joi.object().pattern(/^/, joi.func().arity(1)),
+    languages: languagePluginsSchema,
     overrides: joi.object({copyrightHolder: joi.string()}),
     vcsHosts: joi.object().pattern(/^/, joi.object({
       scaffolder: joi.func().arity(1).required(),