diff --git a/lib/meta-flow.h b/lib/meta-flow.h
index cfc6263..51f6909 100644
--- a/lib/meta-flow.h
+++ b/lib/meta-flow.h
@@ -1466,7 +1466,7 @@ enum OVS_PACKED_ENUM mf_field_id {
       * Maskable: no.
       * Formatting: decimal.
       * Prerequisites: ICMPv4.
-     * Access: read-only.
+     * Access: read/write.
       * NXM: NXM_OF_ICMP_TYPE(13) since v1.1.
       * OXM: OXM_OF_ICMPV4_TYPE(19) since OF1.2 and v1.7.
       * OF1.0: exact match.
@@ -1482,7 +1482,7 @@ enum OVS_PACKED_ENUM mf_field_id {
       * Maskable: no.
       * Formatting: decimal.
       * Prerequisites: ICMPv4.
-     * Access: read-only.
+     * Access: read/write.
       * NXM: NXM_OF_ICMP_CODE(14) since v1.1.
       * OXM: OXM_OF_ICMPV4_CODE(20) since OF1.2 and v1.7.
       * OF1.0: exact match.