diff --git a/spec/rails_helper.rb b/spec/rails_helper.rb
index 96495386b61..0bd62cd22b0 100644
--- a/spec/rails_helper.rb
+++ b/spec/rails_helper.rb
@@ -133,6 +133,8 @@ RSpec.configure do |config|
     end
 
     unfreeze_time
+
+    raise if ActiveRecord::Base.connection_pool.stat[:busy] > 1
   end
 
   config.before :each do |x|