diff --git a/src/config-schema.coffee b/src/config-schema.coffee
index 548b35fa8..89d7034ba 100644
--- a/src/config-schema.coffee
+++ b/src/config-schema.coffee
@@ -98,6 +98,8 @@ module.exports =
         type: ['string', 'null']
 
       # These can be used as globals or scoped, thus defaults.
+      completions:
+        type: ['array', 'object']
       fontFamily:
         type: 'string'
         default: ''