diff --git a/usr.bin/truss/main.c b/usr.bin/truss/main.c
index 28d6ec8a6323..c8536751b8b3 100644
--- a/usr.bin/truss/main.c
+++ b/usr.bin/truss/main.c
@@ -43,6 +43,7 @@ static const char rcsid[] =
 #include <sys/param.h>
 #include <sys/ioctl.h>
 #include <sys/pioctl.h>
+#include <sys/time.h>
 
 #include <err.h>
 #include <errno.h>
diff --git a/usr.bin/truss/syscalls.c b/usr.bin/truss/syscalls.c
index 82c0324f0c6a..fbe86fb2fae4 100644
--- a/usr.bin/truss/syscalls.c
+++ b/usr.bin/truss/syscalls.c
@@ -41,6 +41,7 @@ static const char rcsid[] =
 
 #include <sys/types.h>
 #include <sys/socket.h>
+#include <sys/time.h>
 #include <sys/un.h>
 #include <netinet/in.h>
 #include <arpa/inet.h>