diff --git a/doc/guide/dhcp4-srv.xml b/doc/guide/dhcp4-srv.xml
index 1f7a1eaf37..0404fb1afe 100644
--- a/doc/guide/dhcp4-srv.xml
+++ b/doc/guide/dhcp4-srv.xml
@@ -1421,7 +1421,7 @@ It is merely echoed by the server
 <row><entry>capwap-ac-v4</entry><entry>138</entry><entry>ipv4-address</entry><entry>true</entry><entry>false</entry></row>
 <row><entry>sip-ua-cs-domains</entry><entry>142</entry><entry>fqdn</entry><entry>true</entry><entry>false</entry></row>
 <row><entry>rdnss-selection</entry><entry>146</entry><entry>record (uint8, ipv4-address, ipv4-address, fqdn)</entry><entry>true</entry><entry>false</entry></row>
-<row><entry>v4-portparams</entry><entry>159</entry><entry>record (uint8, uint8, uint16)</entry><entry>false</entry><entry>false</entry></row>
+<row><entry>v4-portparams</entry><entry>159</entry><entry>record (uint8, psid)</entry><entry>false</entry><entry>false</entry></row>
 <row><entry>v4-captive-portal</entry><entry>160</entry><entry>string</entry><entry>false</entry><entry>false</entry></row>
 <row><entry>option-6rd</entry><entry>212</entry><entry>record (uint8, uint8, ipv6-address, ipv4-address)</entry><entry>true</entry><entry>false</entry></row>
 <row><entry>v4-access-domain</entry><entry>213</entry><entry>fqdn</entry><entry>false</entry><entry>false</entry></row>
diff --git a/src/lib/dhcp/std_option_defs.h b/src/lib/dhcp/std_option_defs.h
index 8b16b7316e..5b3e90bf20 100644
--- a/src/lib/dhcp/std_option_defs.h
+++ b/src/lib/dhcp/std_option_defs.h
@@ -77,7 +77,7 @@ RECORD_DECL(V4_RDNSS_SELECT_RECORDS, OPT_UINT8_TYPE, OPT_IPV4_ADDRESS_TYPE,
 // RFC7618 DHCPv4 Port Parameter option.
 //
 // PSID offset, PSID-len and PSID
-RECORD_DECL(V4_PORTPARAMS_RECORDS, OPT_UINT8_TYPE, OPT_UINT8_TYPE, OPT_UINT16_TYPE);
+RECORD_DECL(V4_PORTPARAMS_RECORDS, OPT_UINT8_TYPE, OPT_PSID_TYPE);
 
 // RFC5969 DHCPv6 6RD option.
 //