diff --git a/components/utilities/ulog/syslog/syslog.c b/components/utilities/ulog/syslog/syslog.c
index 872c84d331..4c290bed52 100644
--- a/components/utilities/ulog/syslog/syslog.c
+++ b/components/utilities/ulog/syslog/syslog.c
@@ -11,6 +11,7 @@
 #include <stdarg.h>
 #include <ulog.h>
 #include <rthw.h>
+#include <stdint.h>
 #include "syslog.h"
 
 #ifdef ULOG_OUTPUT_FLOAT