diff --git a/src/bin/network/traceroute/findsaddr-haiku.c b/src/bin/network/traceroute/findsaddr-haiku.c
index ab2ee8bde6..9417580a4a 100644
--- a/src/bin/network/traceroute/findsaddr-haiku.c
+++ b/src/bin/network/traceroute/findsaddr-haiku.c
@@ -8,6 +8,7 @@
 
 
 #include <stdint.h>
+#include <string.h>
 #include <unistd.h>
 #include <net/route.h>
 #include <netinet/in.h>