diff --git a/main.cpp b/main.cpp
index ed1b8c7..6dbd7d6 100644
--- a/main.cpp
+++ b/main.cpp
@@ -35,6 +35,8 @@
 /* Controllers & Sensors. */
 #include "interfaces.hpp"
 #include "pid/zone.hpp"
+#include "sensors/builder.hpp"
+#include "sensors/builderconfig.hpp"
 #include "sensors/manager.hpp"
 
 /* Threads. */