diff --git a/spec/coverage_helper.rb b/spec/coverage_helper.rb
index 961ef36..da2a969 100644
--- a/spec/coverage_helper.rb
+++ b/spec/coverage_helper.rb
@@ -5,5 +5,7 @@
 
 SimpleCov.start do
   add_filter 'lib/rasti/db/nql/syntax.rb'
-  add_filter 'spec/'
+
+  add_group 'Rasti::DB', 'lib'
+  add_group 'Spec', 'spec'
 end
\ No newline at end of file