diff --git a/lib/travis/api/app/endpoint/builds.rb b/lib/travis/api/app/endpoint/builds.rb
index 25945c2b..da1a4e9f 100644
--- a/lib/travis/api/app/endpoint/builds.rb
+++ b/lib/travis/api/app/endpoint/builds.rb
@@ -7,7 +7,7 @@ class Travis::Api::App
         name = params[:branches] ? :find_branches : :find_builds
         params['ids'] = params['ids'].split(',') if params['ids'].respond_to?(:split)
 
-        if params['ids'].empty?
+        if params['ids'].blank?
           respond_with({})
         else
           respond_with service(name, params)