diff --git a/doc/known-warnings.txt b/doc/known-warnings.txt
index 4e9601ae457..08b0d760674 100644
--- a/doc/known-warnings.txt
+++ b/doc/known-warnings.txt
@@ -1,16 +1,16 @@
 # Each line should contain the regular expression of a known Sphinx warning
 # that should be filtered out
-.*Duplicate C declaration.*\n.*'\.\. c:struct:: dma_config'.*
-.*Duplicate C declaration.*\n.*'\.\. c:struct:: zsock_fd_set'.*
-.*Duplicate C declaration.*\n.*'\.\. c:struct:: net_if_mcast_monitor'.*
-.*Duplicate C declaration.*\n.*'\.\. c:struct:: fs_statvfs'.*
-.*Duplicate C declaration.*\n.*'\.\. c:function:: .*dmic_trigger.*'.*
-.*Duplicate C declaration.*\n.*'\.\. c:var:: uint16_t id'.*
-.*Duplicate C declaration.*\n.*'\.\. c:function:: .*net_if_ipv4_addr_mask_cmp.*'.*
-.*Duplicate C declaration.*\n.*'\.\. c:function:: .*net_if_ipv4_is_addr_bcast.*'.*
-.*Duplicate C declaration.*\n.*'\.\. c:function:: .*net_if_ipv4_addr_lookup.*'.*
-.*Duplicate C declaration.*\n.*'\.\. c:function:: .*net_if_ipv6_addr_lookup.*'.*
-.*Duplicate C declaration.*\n.*'\.\. c:function:: .*net_if_ipv6_maddr_lookup.*'.*
-.*Duplicate C declaration.*\n.*'\.\. c:None:: .*struct in_addr.*'.*
-.*Duplicate C declaration.*\n.*'\.\. c:None:: .*struct in6_addr.*'.*
-.*Duplicate C declaration.*\n.*'\.\. c:None:: .*struct net_if.*'.*
+.*Duplicate C declaration.*\n.*'\.\. c:.*:: dma_config'.*
+.*Duplicate C declaration.*\n.*'\.\. c:.*:: zsock_fd_set'.*
+.*Duplicate C declaration.*\n.*'\.\. c:.*:: net_if_mcast_monitor'.*
+.*Duplicate C declaration.*\n.*'\.\. c:.*:: fs_statvfs'.*
+.*Duplicate C declaration.*\n.*'\.\. c:.*:: .*dmic_trigger.*'.*
+.*Duplicate C declaration.*\n.*'\.\. c:.*:: uint16_t id'.*
+.*Duplicate C declaration.*\n.*'\.\. c:.*:: .*net_if_ipv4_addr_mask_cmp.*'.*
+.*Duplicate C declaration.*\n.*'\.\. c:.*:: .*net_if_ipv4_is_addr_bcast.*'.*
+.*Duplicate C declaration.*\n.*'\.\. c:.*:: .*net_if_ipv4_addr_lookup.*'.*
+.*Duplicate C declaration.*\n.*'\.\. c:.*:: .*net_if_ipv6_addr_lookup.*'.*
+.*Duplicate C declaration.*\n.*'\.\. c:.*:: .*net_if_ipv6_maddr_lookup.*'.*
+.*Duplicate C declaration.*\n.*'\.\. c:.*:: .*struct in_addr.*'.*
+.*Duplicate C declaration.*\n.*'\.\. c:.*:: .*struct in6_addr.*'.*
+.*Duplicate C declaration.*\n.*'\.\. c:.*:: .*struct net_if.*'.*