diff --git a/tools/prof/main.c b/tools/prof/main.c
index f4dbed87..6c247a36 100644
--- a/tools/prof/main.c
+++ b/tools/prof/main.c
@@ -4,6 +4,7 @@
 #include <sys/poll.h>
 #include <errno.h>
 #include <stdlib.h>
+#include <stdint.h>
 #include <string.h>
 #include <sys/ioctl.h>
 #include <termios.h>