diff --git a/src/modules/load_mon/load_mon.cpp b/src/modules/load_mon/load_mon.cpp
index 418b4e8012..690e955a38 100644
--- a/src/modules/load_mon/load_mon.cpp
+++ b/src/modules/load_mon/load_mon.cpp
@@ -45,6 +45,7 @@
 
 #include <px4_config.h>
 #include <px4_workqueue.h>
+#include <px4_defines.h>
 
 #include <drivers/drv_hrt.h>