1 files changed, 5 insertions, 2 deletions
diff --git a/lib/diameter/src/base/diameter_config.erl b/lib/diameter/src/base/diameter_config.erl
index 6fc4277ac8..90a9282349 100644
--- a/lib/diameter/src/base/diameter_config.erl
+++ b/lib/diameter/src/base/diameter_config.erl
@@ -588,8 +588,7 @@ opt(service, {K, false})
        K == use_shared_peers;
        K == monitor;
        K == restrict_connections;
-       K == strict_arities;
-       K == decode_format ->
+       K == strict_arities ->
     true;
 
 opt(service, {K, true})
@@ -602,6 +601,7 @@ opt(service, {decode_format, T})
   when T == record;
        T == list;
        T == map;
+       T == none;
        T == record_from_map ->
     true;
 
@@ -682,6 +682,9 @@ opt(_, {K, B})
        K == strict_mbit ->
     is_boolean(B);
 
+opt(_, {avp_dictionaries, Mods}) ->
+    is_list(Mods) andalso lists:all(fun erlang:is_atom/1, Mods);
+
 opt(_, {length_errors, T}) ->
     lists:member(T, [exit, handle, discard]);