diff --git a/usr.bin/truss/syscall.h b/usr.bin/truss/syscall.h
index 0ed08bde57da..e703d434f315 100644
--- a/usr.bin/truss/syscall.h
+++ b/usr.bin/truss/syscall.h
@@ -46,7 +46,7 @@ enum Argtype { None = 1, Hex, Octal, Int, UInt, LongHex, Name, Ptr, Stat, Ioctl,
 	LinuxSockArgs, Umtxop, Atfd, Atflags, Timespec2, Accessmode, Long,
 	Sysarch, ExecArgs, ExecEnv, PipeFds, QuadHex, Utrace, IntArray, Pipe2,
 	CapFcntlRights, Fadvice, FileFlags, Flockop, Getfsstatmode, Kldsymcmd,
-	Kldunloadflags, Sizet, Madvice,
+	Kldunloadflags, Sizet, Madvice, Socklent,
 
 	CloudABIAdvice, CloudABIClockID, ClouduABIFDSFlags,
 	CloudABIFDStat, CloudABIFileStat, CloudABIFileType,
diff --git a/usr.bin/truss/syscalls.c b/usr.bin/truss/syscalls.c
index 861356446498..1254f3b25214 100644
--- a/usr.bin/truss/syscalls.c
+++ b/usr.bin/truss/syscalls.c
@@ -86,7 +86,7 @@ static struct syscall decoded_syscalls[] = {
 	{ .name = "access", .ret_type = 1, .nargs = 2,
 	  .args = { { Name | IN, 0 }, { Accessmode, 1 } } },
 	{ .name = "bind", .ret_type = 1, .nargs = 3,
-	  .args = { { Int, 0 }, { Sockaddr | IN, 1 }, { Int, 2 } } },
+	  .args = { { Int, 0 }, { Sockaddr | IN, 1 }, { Socklent, 2 } } },
 	{ .name = "bindat", .ret_type = 1, .nargs = 4,
 	  .args = { { Atfd, 0 }, { Int, 1 }, { Sockaddr | IN, 2 },
 		    { Int, 3 } } },
@@ -114,7 +114,7 @@ static struct syscall decoded_syscalls[] = {
 	{ .name = "close", .ret_type = 1, .nargs = 1,
 	  .args = { { Int, 0 } } },
 	{ .name = "connect", .ret_type = 1, .nargs = 3,
-	  .args = { { Int, 0 }, { Sockaddr | IN, 1 }, { Int, 2 } } },
+	  .args = { { Int, 0 }, { Sockaddr | IN, 1 }, { Socklent, 2 } } },
 	{ .name = "connectat", .ret_type = 1, .nargs = 4,
 	  .args = { { Atfd, 0 }, { Int, 1 }, { Sockaddr | IN, 2 },
 		    { Int, 3 } } },
@@ -290,7 +290,7 @@ 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 }, { Int | IN, 5 } } },
+		    { Sockaddr | IN, 4 }, { Socklent | IN, 5 } } },
 	{ .name = "setitimer", .ret_type = 1, .nargs = 3,
 	  .args = { { Int, 0 }, { Itimerval, 1 }, { Itimerval | OUT, 2 } } },
 	{ .name = "setrlimit", .ret_type = 1, .nargs = 2,
@@ -1914,6 +1914,9 @@ print_arg(struct syscall_args *sc, unsigned long *args, long *retval,
 	case Madvice:
 		print_integer_arg(sysdecode_madvice, fp, args[sc->offset]);
 		break;
+	case Socklent:
+		fprintf(fp, "%u", (socklen_t)args[sc->offset]);
+		break;
 
 	case CloudABIAdvice:
 		fputs(xlookup(cloudabi_advice, args[sc->offset]), fp);