diff --git a/deps/rabbitmq_auth_backend_oauth2/src/rabbit_oauth2_schema.erl b/deps/rabbitmq_auth_backend_oauth2/src/rabbit_oauth2_schema.erl
index aa6aec1df4..66c6723ec6 100644
--- a/deps/rabbitmq_auth_backend_oauth2/src/rabbit_oauth2_schema.erl
+++ b/deps/rabbitmq_auth_backend_oauth2/src/rabbit_oauth2_schema.erl
@@ -25,6 +25,15 @@
     translate_scope_aliases/1
 ]).
 
+-define(RESOURCE_SERVERS_SYNONYMS, #{
+  "additional_scopes_key" => "extra_scopes_source"
+}).
+
+resource_servers_key_synonym(Name) ->
+  case maps:find(Name, ?RESOURCE_SERVERS_SYNONYMS) of {ok, Synonym} -> Synonym;
+    error -> Name
+  end.
+
 extract_key_as_binary({Name,_}) -> list_to_binary(Name).
 extract_value({_Name,V}) -> V.
 
@@ -240,7 +249,7 @@ extract_resource_server_properties(Settings) ->
     KeyFun = fun extract_key_as_binary/1,
     ValueFun = fun extract_value/1,
 
-    OAuthProviders = [{Name, {list_to_atom(Key), list_to_binary(V)}}
+    OAuthProviders = [{Name, {list_to_atom(resource_servers_key_synonym(Key)), list_to_binary(V)}}
         || {[?AUTH_OAUTH2, ?RESOURCE_SERVERS, Name, Key], V} <- Settings ],
     maps:groups_from_list(KeyFun, ValueFun, OAuthProviders).
 
diff --git a/deps/rabbitmq_auth_backend_oauth2/test/rabbit_oauth2_schema_SUITE.erl b/deps/rabbitmq_auth_backend_oauth2/test/rabbit_oauth2_schema_SUITE.erl
index 34c28e7302..af52410153 100644
--- a/deps/rabbitmq_auth_backend_oauth2/test/rabbit_oauth2_schema_SUITE.erl
+++ b/deps/rabbitmq_auth_backend_oauth2/test/rabbit_oauth2_schema_SUITE.erl
@@ -169,7 +169,7 @@ test_resource_servers_attributes(_) ->
         {["auth_oauth2","resource_servers","rabbitmq1","preferred_username_claims","2"],
             "groupid"}
     ],
-    #{<<"rabbitmq1xxx">> := [{additional_scopes_key, <<"roles">>},
+    #{<<"rabbitmq1xxx">> := [{extra_scopes_source, <<"roles">>},
                           {id, <<"rabbitmq1xxx">>},
                           {preferred_username_claims, [<<"userid">>, <<"groupid">>]},
                           {scope_prefix, <<"somescope.">>}
@@ -186,7 +186,7 @@ test_resource_servers_attributes(_) ->
         {["auth_oauth2","resource_servers","rabbitmq1","preferred_username_claims","2"],
             "groupid"}
     ],
-    #{<<"rabbitmq1">> := [{additional_scopes_key, <<"roles">>},
+    #{<<"rabbitmq1">> := [{extra_scopes_source, <<"roles">>},
                           {id, <<"rabbitmq1">>},
                           {preferred_username_claims, [<<"userid">>, <<"groupid">>]},
                           {scope_prefix, <<"somescope.">>}