diff --git a/src/platforms/px4_posix.h b/src/platforms/px4_posix.h
index f31616710a..7cdc9d83b9 100644
--- a/src/platforms/px4_posix.h
+++ b/src/platforms/px4_posix.h
@@ -40,6 +40,7 @@
 #pragma once
 
 #include <px4_defines.h>
+#include <px4_tasks.h>
 #include <stdint.h>
 #include <unistd.h>
 #include <fcntl.h>