diff --git a/src/hei_user_interface.hpp b/src/hei_user_interface.hpp
index e8740f3..d880ef4 100644
--- a/src/hei_user_interface.hpp
+++ b/src/hei_user_interface.hpp
@@ -43,7 +43,9 @@
  *  }
  */
 
-#include <hei_includes.hpp>
+#include <stdlib.h>
+
+#include <hei_chip.hpp>
 
 namespace libhei
 {