diff --git a/src/ip6-manager/nm-ip6-manager.c b/src/ip6-manager/nm-ip6-manager.c
index 40060c3c4c..99f85ede27 100644
--- a/src/ip6-manager/nm-ip6-manager.c
+++ b/src/ip6-manager/nm-ip6-manager.c
@@ -446,8 +446,9 @@ nm_ip6_device_sync_from_netlink (NMIP6Device *device, gboolean config_changed)
 		addr = nl_addr_get_binary_addr (nladdr);
 
 		if (inet_ntop (AF_INET6, addr, buf, INET6_ADDRSTRLEN) > 0) {
-			nm_log_dbg (LOGD_IP6, "(%s): netlink address: %s",
-			            device->iface, buf);
+			nm_log_dbg (LOGD_IP6, "(%s): netlink address: %s/%d",
+			            device->iface, buf,
+			            rtnl_addr_get_prefixlen (rtnladdr));
 		}
 
 		if (IN6_IS_ADDR_LINKLOCAL (addr)) {
diff --git a/src/nm-system.c b/src/nm-system.c
index 1710e222b9..27cbcd6767 100644
--- a/src/nm-system.c
+++ b/src/nm-system.c
@@ -241,7 +241,7 @@ sync_addresses (int ifindex,
 
 		if (buf_valid) {
 			nm_log_dbg (log_domain, "(%s): removing address '%s/%d'",
-			            iface, buf, nl_addr_get_prefixlen (nladdr));
+			            iface, buf, rtnl_addr_get_prefixlen (match_addr));
 		}
 
 		/* Otherwise, match_addr should be removed from the interface. */