diff --git a/micro_ros_agent/src/agent/graph_manager/graph_typesupport.cpp b/micro_ros_agent/src/agent/graph_manager/graph_typesupport.cpp
index 0f5d016..a3ab915 100644
--- a/micro_ros_agent/src/agent/graph_manager/graph_typesupport.cpp
+++ b/micro_ros_agent/src/agent/graph_manager/graph_typesupport.cpp
@@ -41,7 +41,7 @@ ParticipantEntitiesInfoTypeSupport::ParticipantEntitiesInfoTypeSupport()
     ss << "dds_::" << message_name << "_";
     this->setName(ss.str().c_str());
 
-    bool full_bounded = true;
+    char full_bounded;
     m_typeSize = 4 + callbacks_->max_serialized_size(full_bounded);
 }
 
@@ -133,7 +133,7 @@ MicrorosGraphInfoTypeSupport::MicrorosGraphInfoTypeSupport()
     ss << "dds_::" << message_name << "_";
     this->setName(ss.str().c_str());
 
-    bool full_bounded = true;
+    char full_bounded;
     m_typeSize = 4 + callbacks_->max_serialized_size(full_bounded);
 }