diff --git a/usr.bin/truss/syscalls.c b/usr.bin/truss/syscalls.c
index fce610c75213..bd8b932e9efe 100644
--- a/usr.bin/truss/syscalls.c
+++ b/usr.bin/truss/syscalls.c
@@ -177,7 +177,7 @@ static struct syscall decoded_syscalls[] = {
 	{ .name = "gettimeofday", .ret_type = 1, .nargs = 2,
 	  .args = { { Timeval | OUT, 0 }, { Ptr, 1 } } },
 	{ .name = "ioctl", .ret_type = 1, .nargs = 3,
-	  .args = { { Int, 0 }, { Ioctl, 1 }, { Hex, 2 } } },
+	  .args = { { Int, 0 }, { Ioctl, 1 }, { Ptr, 2 } } },
 	{ .name = "kevent", .ret_type = 1, .nargs = 6,
 	  .args = { { Int, 0 }, { Kevent, 1 }, { Int, 2 }, { Kevent | OUT, 3 },
 		    { Int, 4 }, { Timespec, 5 } } },
@@ -288,7 +288,7 @@ static struct syscall decoded_syscalls[] = {
 		    { Timeval, 4 } } },
 	{ .name = "sendto", .ret_type = 1, .nargs = 6,
 	  .args = { { Int, 0 }, { BinString | IN, 1 }, { Sizet, 2 }, { Hex, 3 },
-		    { Sockaddr | IN, 4 }, { Ptr | IN, 5 } } },
+		    { Sockaddr | IN, 4 }, { Int | IN, 5 } } },
 	{ .name = "setitimer", .ret_type = 1, .nargs = 3,
 	  .args = { { Int, 0 }, { Itimerval, 1 }, { Itimerval | OUT, 2 } } },
 	{ .name = "setrlimit", .ret_type = 1, .nargs = 2,