diff --git a/elasticsearch-model/lib/elasticsearch/model/multimodel.rb b/elasticsearch-model/lib/elasticsearch/model/multimodel.rb
index 6b5fc2a8..8e816d2d 100644
--- a/elasticsearch-model/lib/elasticsearch/model/multimodel.rb
+++ b/elasticsearch-model/lib/elasticsearch/model/multimodel.rb
@@ -42,7 +42,7 @@ def self.add(klass)
       # Returns an Array of registered models
       #
       def self.all
-        __instance.models
+        __instance.models.sort_by(&:name)
       end
 
       # Adds a model to the registry