diff --git a/lib/nlattr.c b/lib/nlattr.c
index 4226dfe..18eca78 100644
--- a/lib/nlattr.c
+++ b/lib/nlattr.c
@@ -22,6 +22,10 @@
 	[NLA_U64]	= sizeof(u64),
 	[NLA_MSECS]	= sizeof(u64),
 	[NLA_NESTED]	= NLA_HDRLEN,
+	[NLA_S8]	= sizeof(s8),
+	[NLA_S16]	= sizeof(s16),
+	[NLA_S32]	= sizeof(s32),
+	[NLA_S64]	= sizeof(s64),
 };
 
 static int validate_nla(const struct nlattr *nla, int maxtype,