diff --git a/app/models/issue_custom_field.rb b/app/models/issue_custom_field.rb
index 776bb4f0a..a695eaea3 100644
--- a/app/models/issue_custom_field.rb
+++ b/app/models/issue_custom_field.rb
@@ -32,7 +32,7 @@ class IssueCustomField < CustomField
     sql = super
     id_column ||= id
     tracker_condition = "#{Issue.table_name}.tracker_id IN (SELECT tracker_id FROM #{table_name_prefix}custom_fields_trackers#{table_name_suffix} WHERE custom_field_id = #{id_column})"
-    project_condition = "EXISTS (SELECT 1 FROM #{CustomField.table_name} ifa WHERE ifa.is_for_all = #{connection.quoted_true} AND ifa.id = #{id_column})" + 
+    project_condition = "EXISTS (SELECT 1 FROM #{CustomField.table_name} ifa WHERE ifa.is_for_all = #{ActiveRecord::Base.connection.quoted_true} AND ifa.id = #{id_column})" + 
       " OR #{Issue.table_name}.project_id IN (SELECT project_id FROM #{table_name_prefix}custom_fields_projects#{table_name_suffix} WHERE custom_field_id = #{id_column})"
 
     "((#{sql}) AND (#{tracker_condition}) AND (#{project_condition}))"