diff --git a/libraries/app/database_api.cpp b/libraries/app/database_api.cpp
index fd8779f5..edd2fdb8 100644
--- a/libraries/app/database_api.cpp
+++ b/libraries/app/database_api.cpp
@@ -1717,6 +1717,15 @@ set<public_key_type> database_api_impl::get_potential_signatures( const signed_t
       _db.get_global_properties().parameters.max_authority_depth
    );
 
+   // Insert keys in required "other" authories
+   flat_set<account_id_type> required_active;
+   flat_set<account_id_type> required_owner;
+   vector<authority> other;
+   trx.get_required_authorities( required_active, required_owner, other );
+   for( const auto& auth : other )
+      for( const auto& key : auth.get_keys() )
+         result.insert( key );
+
    wdump((result));
    return result;
 }