diff --git a/src/libnm-platform/nm-netlink.c b/src/libnm-platform/nm-netlink.c
index cb5bd4a89..ecb700fc9 100644
--- a/src/libnm-platform/nm-netlink.c
+++ b/src/libnm-platform/nm-netlink.c
@@ -619,6 +619,7 @@ nla_nest_end(struct nl_msg *msg, struct nlattr *start)
 static const uint8_t nla_attr_minlen[NLA_TYPE_MAX + 1] = {
     [NLA_U8]     = sizeof(uint8_t),
     [NLA_U16]    = sizeof(uint16_t),
+    [NLA_S32]    = sizeof(int32_t),
     [NLA_U32]    = sizeof(uint32_t),
     [NLA_U64]    = sizeof(uint64_t),
     [NLA_STRING] = 1,
diff --git a/src/libnm-platform/nm-netlink.h b/src/libnm-platform/nm-netlink.h
index 852c9c8f6..ccd4b787c 100644
--- a/src/libnm-platform/nm-netlink.h
+++ b/src/libnm-platform/nm-netlink.h
@@ -31,6 +31,7 @@ enum {
     NLA_UNSPEC, /* Unspecified type, binary data chunk */
     NLA_U8,     /* 8 bit integer */
     NLA_U16,    /* 16 bit integer */
+    NLA_S32,    /* 32 bit integer */
     NLA_U32,    /* 32 bit integer */
     NLA_U64,    /* 64 bit integer */
     NLA_STRING, /* NUL terminated character string */