--- a/web/app/models/benchmark_info.rb	Thu Jun 20 20:32:40 2013 +0200
+++ b/web/app/models/benchmark_info.rb	Thu Jun 20 21:28:14 2013 +0200
@@ -14,4 +14,6 @@
 
   has_many :benchmark_results, inverse_of: :benchmark_info
 
+  validates_presence_of :class, :selector
+
 end