diff --git a/src/modules/load_mon/LoadMon.hpp b/src/modules/load_mon/LoadMon.hpp
index f93ae94cfa..1aa6411135 100644
--- a/src/modules/load_mon/LoadMon.hpp
+++ b/src/modules/load_mon/LoadMon.hpp
@@ -33,6 +33,7 @@
 
 #pragma once
 
+#include <malloc.h>
 #include <drivers/drv_hrt.h>
 #include <lib/perf/perf_counter.h>
 #include <px4_platform_common/px4_config.h>