diff --git a/test/parallel/test-postmortem-metadata.js b/test/parallel/test-postmortem-metadata.js
index 95d2ff67e1fb1d..0c06108c58bd45 100644
--- a/test/parallel/test-postmortem-metadata.js
+++ b/test/parallel/test-postmortem-metadata.js
@@ -37,6 +37,10 @@ assert.strictEqual(missing.length, 0, `Missing constants: ${missing}`);
 // pushed to the bottom of the file for improved readability.
 function getExpectedSymbols() {
   return [
+    // Disable the maximum line length for the remainder of the file since it
+    // should only consist of postmortem constants, and some of them can be
+    // relatively long.
+    /* eslint-disable max-len */
     'v8dbg_bit_field3_dictionary_map_shift',
     'v8dbg_bit_field3_number_of_own_descriptors_shift',
     'v8dbg_class_Code__instruction_size__int',
@@ -64,10 +68,10 @@ function getExpectedSymbols() {
     'v8dbg_class_JSRegExp__source__Object',
     'v8dbg_class_Map__bit_field3__int',
     'v8dbg_class_Map__constructor_or_backpointer__Object',
-    'v8dbg_class_Map__inobject_properties_or_constructor_function_index__int',
-    'v8dbg_class_Map__instance_attributes__int',
+    'v8dbg_class_Map__inobject_properties_start_or_constructor_function_index__char',
+    'v8dbg_class_Map__instance_type__uint16_t',
     'v8dbg_class_Map__instance_descriptors__DescriptorArray',
-    'v8dbg_class_Map__instance_size__int',
+    'v8dbg_class_Map__instance_size_in_words__char',
     'v8dbg_class_Oddball__kind_offset__int',
     'v8dbg_class_Script__line_ends__Object',
     'v8dbg_class_Script__line_offset__SMI',