diff --git a/doc/known-warnings.txt b/doc/known-warnings.txt
index 2ae3f98729c4f0..20788ea8e54a9d 100644
--- a/doc/known-warnings.txt
+++ b/doc/known-warnings.txt
@@ -16,3 +16,6 @@
 .*Duplicate C declaration.*\n.*'\.\. c:.*:: .*struct in6_addr.*'.*
 .*Duplicate C declaration.*\n.*'\.\. c:.*:: .*struct net_if.*'.*
 .*Duplicate C declaration.*\n.*'\.\. c:struct:: bt_ots_init'.*
+.*Duplicate C declaration.*\n.*'\.\. c:member:: enum *bt_mesh_dfd_upload_phase bt_mesh_dfd_srv.phase'.*
+.*Duplicate C declaration.*\n.*'\.\. c:member:: struct *bt_mesh_blob_xfer bt_mesh_dfu_cli.blob'.*
+.*Duplicate C declaration.*\n.*'\.\. c:member:: struct *net_if *\* net_if_mcast_monitor.iface'.