diff --git a/deps/rabbit_common/src/rabbit_cert_info.erl b/deps/rabbit_common/src/rabbit_cert_info.erl
index cc4e7ea64b1c..ae1ed690c9aa 100644
--- a/deps/rabbit_common/src/rabbit_cert_info.erl
+++ b/deps/rabbit_common/src/rabbit_cert_info.erl
@@ -145,7 +145,7 @@ format_rdn(#'AttributeTypeAndValue'{type = T, value = V}) ->
             {?'id-at-pseudonym'              , "PSEUDONYM"},
             {?'id-domainComponent'           , "DC"},
             {?'id-emailAddress'              , "EMAILADDRESS"},
-            {?'street-address'               , "STREET"},
+            {17                              , "STREET"}, %% macro was removed in OTP28
             {{0,9,2342,19200300,100,1,1}     , "UID"}], %% Not in public_key.hrl
     case proplists:lookup(T, Fmts) of
         {_, Fmt} ->
diff --git a/deps/rabbitmq_auth_backend_oauth2/Makefile b/deps/rabbitmq_auth_backend_oauth2/Makefile
index f11f265f1161..b924a3120645 100644
--- a/deps/rabbitmq_auth_backend_oauth2/Makefile
+++ b/deps/rabbitmq_auth_backend_oauth2/Makefile
@@ -8,7 +8,7 @@ export BUILD_WITHOUT_QUIC
 LOCAL_DEPS = inets public_key
 BUILD_DEPS = rabbit_common rabbitmq_cli
 DEPS = rabbit cowlib jose base64url oauth2_client
-TEST_DEPS = cowboy rabbitmq_web_dispatch rabbitmq_ct_helpers rabbitmq_ct_client_helpers amqp_client rabbitmq_web_mqtt emqtt rabbitmq_amqp_client
+TEST_DEPS = cowboy rabbitmq_web_dispatch rabbitmq_ct_helpers rabbitmq_ct_client_helpers amqp_client rabbitmq_mqtt rabbitmq_web_mqtt emqtt rabbitmq_amqp_client
 
 PLT_APPS += rabbitmq_cli
 
diff --git a/deps/rabbitmq_mqtt/src/rabbit_mqtt_processor.erl b/deps/rabbitmq_mqtt/src/rabbit_mqtt_processor.erl
index 7ae0893a13eb..ad8d34085364 100644
--- a/deps/rabbitmq_mqtt/src/rabbit_mqtt_processor.erl
+++ b/deps/rabbitmq_mqtt/src/rabbit_mqtt_processor.erl
@@ -1219,7 +1219,8 @@ vhost_in_username(UserBin) ->
             %% split at the last colon, disallowing colons in username
             case re:split(UserBin, ":(?!.*?:)") of
                 [_, _]      -> true;
-                [UserBin]   -> false
+                [UserBin]   -> false;
+                []          -> false
             end
     end.
 
@@ -1231,7 +1232,8 @@ get_vhost_username(UserBin) ->
             %% split at the last colon, disallowing colons in username
             case re:split(UserBin, ":(?!.*?:)") of
                 [Vhost, UserName] -> {Vhost,  UserName};
-                [UserBin]         -> Default
+                [UserBin]         -> Default;
+                []                -> Default
             end
     end.