diff --git a/src/network/slirp/ip_input.c b/src/network/slirp/ip_input.c
index 62fd5d202..c2337f883 100644
--- a/src/network/slirp/ip_input.c
+++ b/src/network/slirp/ip_input.c
@@ -37,6 +37,8 @@
  * Please read the file COPYRIGHT for the
  * terms and conditions of the copyright.
  */
+#include <stdint.h>
+
 #include "slirp.h"
 #include "ip_icmp.h"