diff --git a/src/platforms/px4_nodehandle.h b/src/platforms/px4_nodehandle.h
index 80be9ec527..83a3e422dd 100644
--- a/src/platforms/px4_nodehandle.h
+++ b/src/platforms/px4_nodehandle.h
@@ -53,6 +53,7 @@
 /* includes when building for NuttX */
 #include <poll.h>
 #endif
+#include <functional>
 
 namespace px4
 {