diff --git a/system/uorb/uORB/uORB.c b/system/uorb/uORB/uORB.c
index 9d9f6ac75..d979277cb 100644
--- a/system/uorb/uORB/uORB.c
+++ b/system/uorb/uORB/uORB.c
@@ -28,6 +28,7 @@
 #include <sys/ioctl.h>
 #include <time.h>
 #include <unistd.h>
+#include <string.h>
 
 #include <nuttx/streams.h>
 #include <uORB/uORB.h>
diff --git a/system/uorb/uORB/uORB.h b/system/uorb/uORB/uORB.h
index aceccc014..e2434acea 100644
--- a/system/uorb/uORB/uORB.h
+++ b/system/uorb/uORB/uORB.h
@@ -36,6 +36,7 @@
 #include <stdint.h>
 #include <stdbool.h>
 #include <syslog.h>
+#include <inttypes.h>
 
 /****************************************************************************
  * Public Types