diff --git a/smocore/include/goal.h b/smocore/include/goal.h
index 690be6b..da161d4 100644
--- a/smocore/include/goal.h
+++ b/smocore/include/goal.h
@@ -2,11 +2,12 @@
 #define _GOAL_H
 
 #include <concept.h>
+#include <mentalEntity.h>
 
 namespace smo {
 
 class Goal
-: public cologex::Concept
+: public cologex::Concept, public MentalEntity
 {
 public:
     Goal() = default;