diff --git a/src/ItemParameterTable.cc b/src/ItemParameterTable.cc
index 6bcad298..fcfebd02 100644
--- a/src/ItemParameterTable.cc
+++ b/src/ItemParameterTable.cc
@@ -940,10 +940,11 @@ public:
           case 3:
             return this->unit_sale_divisor;
         }
+        throw runtime_error("invalid defensive item type");
       case 2:
         return this->mag_sale_divisor;
       default:
-        throw logic_error("item type does not have a sale divisor");
+        throw runtime_error("item type does not have a sale divisor");
     }
   }
 
diff --git a/src/Main.cc b/src/Main.cc
index df2c8560..644c4fd8 100644
--- a/src/Main.cc
+++ b/src/Main.cc
@@ -2393,9 +2393,11 @@ Action a_convert_item_parameter_table(
       auto data = std::make_shared<string>(read_input_data(args));
       auto pmt = ItemParameterTable::from_binary(data, get_cli_version(args, Version::BB_V4));
       auto json = pmt->json();
-      uint32_t hex_option = args.get<bool>("hex") ? phosg::JSON::SerializeOption::HEX_INTEGERS : 0;
-      string json_data = json.serialize(
-          phosg::JSON::SerializeOption::FORMAT | hex_option | phosg::JSON::SerializeOption::SORT_DICT_KEYS);
+      uint32_t serialize_options = phosg::JSON::SerializeOption::FORMAT | phosg::JSON::SerializeOption::SORT_DICT_KEYS;
+      if (args.get<bool>("hex")) {
+        serialize_options |= phosg::JSON::SerializeOption::HEX_INTEGERS;
+      }
+      string json_data = json.serialize(serialize_options);
       write_output_data(args, json_data.data(), json_data.size(), nullptr);
     });