diff --git a/src-c/core/ChangeOperation.h b/src-c/core/ChangeOperation.h
deleted file mode 100644
index 6aee442..0000000
--- a/src-c/core/ChangeOperation.h
+++ /dev/null
@@ -1,16 +0,0 @@
-#ifndef CHANGEOPERATION_H
-#define CHANGEOPERATION_H
-
-#include "ChangeUnit.h"
-#include <list>
-#include <stdlib.h>
-
-class ChangeOperation
-{
-public:
-    size_t parent;
-    std::list<ChangeUnit> changes;
-    std::list<size_t> children;
-};
-
-#endif
diff --git a/src-c/core/ChangeUnit.h b/src-c/core/ChangeUnit.h
deleted file mode 100644
index 4840360..0000000
--- a/src-c/core/ChangeUnit.h
+++ /dev/null
@@ -1,15 +0,0 @@
-#ifndef CHANGEUNIT_H
-#define CHANGEUNIT_H
-
-#include <stdlib.h>
-
-class ChangeUnit
-{
-public:
-    size_t change_buffer_offset;
-    size_t length;
-    size_t buffer_position;
-    bool insert;
-};
-
-#endif