diff --git a/test/Dummy_test.cc b/test/Dummy_test.cc
index fd3a01e..2c6e589 100644
--- a/test/Dummy_test.cc
+++ b/test/Dummy_test.cc
@@ -1,6 +1,8 @@
 #if GTEST
 #include <gtest/gtest.h>
 
+#include "DifferentialDrive.h"
+#include "DistanceSensor.h"
 #include "Roboid.h"
 
 TEST(Dummy, Foo) {