diff --git a/lib/noosfero/api/v1/search.rb b/lib/noosfero/api/v1/search.rb
index 67a741c..572871b 100644
--- a/lib/noosfero/api/v1/search.rb
+++ b/lib/noosfero/api/v1/search.rb
@@ -18,7 +18,7 @@ module Noosfero
               scope = scope.where(:type => params[:type]) if params[:type] && !(params[:type] == 'Article')
               scope = scope.where(make_conditions_with_parameter(params))
               scope = scope.joins(:categories).where(:categories => {:id => params[:category_ids]}) if params[:category_ids].present?
-              scope = scope.where('children_count > 0') if params[:has_children].present?
+              scope = scope.where('articles.children_count > 0') if params[:has_children].present?
               query = params[:query] || ""
               order = "more_recent"
 
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libgit2 0.21.2