diff --git a/bgpd/bgp_attr.c b/bgpd/bgp_attr.c
index 5320a5f57e7d..6c886b006131 100644
--- a/bgpd/bgp_attr.c
+++ b/bgpd/bgp_attr.c
@@ -1398,6 +1398,7 @@ bgp_attr_malformed(struct bgp_attr_parser_args *args, uint8_t subcode,
 	case BGP_ATTR_AS4_AGGREGATOR:
 	case BGP_ATTR_AGGREGATOR:
 	case BGP_ATTR_ATOMIC_AGGREGATE:
+	case BGP_ATTR_PREFIX_SID:
 		return BGP_ATTR_PARSE_PROCEED;
 
 	/* Core attributes, particularly ones which may influence route
@@ -3163,8 +3164,6 @@ enum bgp_attr_parse_ret bgp_attr_prefix_sid(struct bgp_attr_parser_args *args)
 	struct attr *const attr = args->attr;
 	enum bgp_attr_parse_ret ret;
 
-	attr->flag |= ATTR_FLAG_BIT(BGP_ATTR_PREFIX_SID);
-
 	uint8_t type;
 	uint16_t length;
 	size_t headersz = sizeof(type) + sizeof(length);
@@ -3214,6 +3213,8 @@ enum bgp_attr_parse_ret bgp_attr_prefix_sid(struct bgp_attr_parser_args *args)
 		}
 	}
 
+	SET_FLAG(attr->flag, ATTR_FLAG_BIT(BGP_ATTR_PREFIX_SID));
+
 	return BGP_ATTR_PARSE_PROCEED;
 }