diff --git a/sys/net/include/rpl/rpl_config.h b/sys/net/include/rpl/rpl_config.h
index e55eda0b31..9720b14116 100644
--- a/sys/net/include/rpl/rpl_config.h
+++ b/sys/net/include/rpl/rpl_config.h
@@ -48,18 +48,20 @@ enum RPL_MSG_CODE {
 };
 
 /* packet base lengths */
-#define DIO_BASE_LEN                24
-#define DIS_BASE_LEN                2
-#define DAO_BASE_LEN                4
-#define DAO_D_LEN                   24
-#define DAO_ACK_LEN                 4
-#define DAO_ACK_D_LEN               24
-#define RPL_OPT_LEN                 2
-#define RPL_OPT_DODAG_CONF_LEN      16
-#define RPL_OPT_PREFIX_INFO_LEN     32
-#define RPL_OPT_SOLICITED_INFO_LEN  21
-#define RPL_OPT_TARGET_LEN          20
-#define RPL_OPT_TRANSIT_LEN         22
+#define DIO_BASE_LEN                            24
+#define DIS_BASE_LEN                            2
+#define DAO_BASE_LEN                            4
+#define DAO_D_LEN                               24
+#define DAO_ACK_LEN                             4
+#define DAO_ACK_D_LEN                           24
+#define RPL_OPT_LEN                             2
+#define RPL_OPT_DODAG_CONF_LEN                  14
+#define RPL_OPT_DODAG_CONF_LEN_WITH_OPT_LEN     (RPL_OPT_DODAG_CONF_LEN + RPL_OPT_LEN)
+#define RPL_OPT_PREFIX_INFO_LEN                 30
+#define RPL_OPT_PREFIX_INFO_LEN_WITH_OPT_LEN    (RPL_OPT_PREFIX_INFO_LEN + RPL_OPT_LEN)
+#define RPL_OPT_SOLICITED_INFO_LEN              21
+#define RPL_OPT_TARGET_LEN                      20
+#define RPL_OPT_TRANSIT_LEN                     22
 
 /* message options */
 #define RPL_OPT_PAD1                 0
diff --git a/sys/net/routing/rpl/rpl_nonstoring/rpl_nonstoring.c b/sys/net/routing/rpl/rpl_nonstoring/rpl_nonstoring.c
index 503334de72..91e1adc52c 100644
--- a/sys/net/routing/rpl/rpl_nonstoring/rpl_nonstoring.c
+++ b/sys/net/routing/rpl/rpl_nonstoring/rpl_nonstoring.c
@@ -276,7 +276,7 @@ void rpl_send_DIO_mode(ipv6_addr_t *destination)
     rpl_send_opt_dodag_conf_buf->default_lifetime = mydodag->default_lifetime;
     rpl_send_opt_dodag_conf_buf->lifetime_unit = mydodag->lifetime_unit;
 
-    opt_hdr_len += RPL_OPT_DODAG_CONF_LEN;
+    opt_hdr_len += RPL_OPT_DODAG_CONF_LEN_WITH_OPT_LEN;
 
 
     uint16_t plen = ICMPV6_HDR_LEN + DIO_BASE_LEN + opt_hdr_len;
@@ -483,7 +483,7 @@ void rpl_recv_DIO_mode(void)
                 dio_dodag.default_lifetime = rpl_opt_dodag_conf_buf->default_lifetime;
                 dio_dodag.lifetime_unit = rpl_opt_dodag_conf_buf->lifetime_unit;
                 dio_dodag.of = (struct rpl_of_t *) rpl_get_of_for_ocp(rpl_opt_dodag_conf_buf->ocp);
-                len += RPL_OPT_DODAG_CONF_LEN;
+                len += RPL_OPT_DODAG_CONF_LEN_WITH_OPT_LEN;
                 break;
             }
 
@@ -493,7 +493,7 @@ void rpl_recv_DIO_mode(void)
                     return;
                 }
 
-                len += RPL_OPT_PREFIX_INFO_LEN;
+                len += RPL_OPT_PREFIX_INFO_LEN_WITH_OPT_LEN;
                 break;
             }
 
diff --git a/sys/net/routing/rpl/rpl_storing/rpl_storing.c b/sys/net/routing/rpl/rpl_storing/rpl_storing.c
index 2afc8f5f1c..adc053c895 100644
--- a/sys/net/routing/rpl/rpl_storing/rpl_storing.c
+++ b/sys/net/routing/rpl/rpl_storing/rpl_storing.c
@@ -274,7 +274,7 @@ void rpl_send_DIO_mode(ipv6_addr_t *destination)
     rpl_send_opt_dodag_conf_buf->default_lifetime = mydodag->default_lifetime;
     rpl_send_opt_dodag_conf_buf->lifetime_unit = mydodag->lifetime_unit;
 
-    opt_hdr_len += RPL_OPT_DODAG_CONF_LEN;
+    opt_hdr_len += RPL_OPT_DODAG_CONF_LEN_WITH_OPT_LEN;
 
     uint16_t plen = ICMPV6_HDR_LEN + DIO_BASE_LEN + opt_hdr_len;
     rpl_send(destination, (uint8_t *)icmp_send_buf, plen, IPV6_PROTO_NUM_ICMPV6);
@@ -514,7 +514,7 @@ void rpl_recv_DIO_mode(void)
                 dio_dodag.default_lifetime = rpl_opt_dodag_conf_buf->default_lifetime;
                 dio_dodag.lifetime_unit = rpl_opt_dodag_conf_buf->lifetime_unit;
                 dio_dodag.of = (struct rpl_of_t *) rpl_get_of_for_ocp(rpl_opt_dodag_conf_buf->ocp);
-                len += RPL_OPT_DODAG_CONF_LEN;
+                len += RPL_OPT_DODAG_CONF_LEN_WITH_OPT_LEN;
                 break;
             }
 
@@ -524,7 +524,7 @@ void rpl_recv_DIO_mode(void)
                     return;
                 }
 
-                len += RPL_OPT_PREFIX_INFO_LEN;
+                len += RPL_OPT_PREFIX_INFO_LEN_WITH_OPT_LEN;
                 break;
             }