diff --git a/test/mock/dds/DomainParticipantImpl/fastdds/domain/DomainParticipantImpl.hpp b/test/mock/dds/DomainParticipantImpl/fastdds/domain/DomainParticipantImpl.hpp
index bb7fc5dd580..d5b2a0ca45f 100644
--- a/test/mock/dds/DomainParticipantImpl/fastdds/domain/DomainParticipantImpl.hpp
+++ b/test/mock/dds/DomainParticipantImpl/fastdds/domain/DomainParticipantImpl.hpp
@@ -85,6 +85,7 @@ class DomainParticipantImpl
     {
         participant_->impl_ = this;
 
+        guid_.guidPrefix.value[11] = 1;
         eprosima::fastrtps::TopicAttributes top_attr;
         eprosima::fastrtps::xmlparser::XMLProfileManager::getDefaultTopicAttributes(top_attr);
         default_topic_qos_.history() = top_attr.historyQos;
@@ -354,9 +355,9 @@ class DomainParticipantImpl
     }
 
     MOCK_METHOD5(create_contentfilteredtopic, ContentFilteredTopic * (
-                const std::string& name,
+                const std::string & name,
                 Topic * related_topic,
-                const std::string& filter_expression,
+                const std::string & filter_expression,
                 const std::vector<std::string>& expression_parameters,
                 const char* filter_class_name));
 
@@ -377,7 +378,7 @@ class DomainParticipantImpl
                 const char* filter_class_name));
 
     MOCK_METHOD1(ignore_participant, bool (
-                const fastrtps::rtps::InstanceHandle_t& handle));
+                const fastrtps::rtps::InstanceHandle_t & handle));
 
 
     TopicDescription* lookup_topicdescription(