diff --git a/src/ndisc/nm-lndp-ndisc.c b/src/ndisc/nm-lndp-ndisc.c
index c302f3b2c1..0692e4f9a7 100644
--- a/src/ndisc/nm-lndp-ndisc.c
+++ b/src/ndisc/nm-lndp-ndisc.c
@@ -339,7 +339,7 @@ _ndp_msg_add_option(struct ndp_msg *msg, int len)
 
 #define NM_ND_OPT_RDNSS 25
 
-typedef struct {
+typedef struct _nm_packed {
     struct nd_opt_hdr header;
     uint16_t          reserved;
     uint32_t          lifetime;
@@ -354,7 +354,7 @@ G_STATIC_ASSERT(sizeof(NMLndpRdnssOption) == 8u);
 
 #define NM_ND_OPT_DNSSL 31
 
-typedef struct {
+typedef struct _nm_packed {
     struct nd_opt_hdr header;
     uint16_t          reserved;
     uint32_t          lifetime;