diff --git a/hcore/include/existent.h b/hcore/include/existent.h
deleted file mode 100644
index c70933a..0000000
--- a/hcore/include/existent.h
+++ /dev/null
@@ -1,11 +0,0 @@
-#ifndef _EXISTENT_H
-#define _EXISTENT_H
-
-#include <mentalEntity.h>
-
-class Existent
-: public MentalEntity
-{
-};
-
-#endif
diff --git a/hcore/include/implix/implix.h b/hcore/include/implix/implix.h
new file mode 100644
index 0000000..f767604
--- /dev/null
+++ b/hcore/include/implix/implix.h
@@ -0,0 +1,17 @@
+#ifndef IMPLIX_H
+#define IMPLIX_H
+
+namespace hk {
+namespace implix {
+
+class Implix
+{
+public:
+    Implix() = default;
+    ~Implix() = default;
+};
+
+} // namespace implix
+} // namespace hk
+
+#endif // IMPLIX_H