diff --git a/swagger_parser/lib/src/generator/templates/dart_enum_dto_template.dart b/swagger_parser/lib/src/generator/templates/dart_enum_dto_template.dart
index c1abbf5d..f74255cf 100644
--- a/swagger_parser/lib/src/generator/templates/dart_enum_dto_template.dart
+++ b/swagger_parser/lib/src/generator/templates/dart_enum_dto_template.dart
@@ -84,7 +84,7 @@ String _dartEnumDartMappableTemplate(
       .join(',\n');
 
   final annotationParameters = [
-    if (unknownEnumValue) "defaultValue: 'unknown'",
+    if (unknownEnumValue) 'defaultValue: $className.unknown',
   ].join(', ');
 
   final enumBodyParts = [
diff --git a/swagger_parser/test/e2e/tests/xof/discriminated_any_of_complete_mapping_mappable/expected_files/models/cat_type.dart b/swagger_parser/test/e2e/tests/xof/discriminated_any_of_complete_mapping_mappable/expected_files/models/cat_type.dart
index b3b6e32c..60a11c0c 100644
--- a/swagger_parser/test/e2e/tests/xof/discriminated_any_of_complete_mapping_mappable/expected_files/models/cat_type.dart
+++ b/swagger_parser/test/e2e/tests/xof/discriminated_any_of_complete_mapping_mappable/expected_files/models/cat_type.dart
@@ -6,7 +6,7 @@ import 'package:dart_mappable/dart_mappable.dart';
 
 part 'cat_type.mapper.dart';
 
-@MappableEnum(defaultValue: 'unknown')
+@MappableEnum(defaultValue: CatType.unknown)
 enum CatType {
   @MappableValue('Cat')
   cat,
diff --git a/swagger_parser/test/e2e/tests/xof/discriminated_any_of_complete_mapping_mappable/expected_files/models/dog_type.dart b/swagger_parser/test/e2e/tests/xof/discriminated_any_of_complete_mapping_mappable/expected_files/models/dog_type.dart
index 36971040..1011c7bb 100644
--- a/swagger_parser/test/e2e/tests/xof/discriminated_any_of_complete_mapping_mappable/expected_files/models/dog_type.dart
+++ b/swagger_parser/test/e2e/tests/xof/discriminated_any_of_complete_mapping_mappable/expected_files/models/dog_type.dart
@@ -6,7 +6,7 @@ import 'package:dart_mappable/dart_mappable.dart';
 
 part 'dog_type.mapper.dart';
 
-@MappableEnum(defaultValue: 'unknown')
+@MappableEnum(defaultValue: DogType.unknown)
 enum DogType {
   @MappableValue('Dog')
   dog,
diff --git a/swagger_parser/test/e2e/tests/xof/discriminated_any_of_complete_mapping_mappable/expected_files/models/human_type.dart b/swagger_parser/test/e2e/tests/xof/discriminated_any_of_complete_mapping_mappable/expected_files/models/human_type.dart
index de1f1172..5202664c 100644
--- a/swagger_parser/test/e2e/tests/xof/discriminated_any_of_complete_mapping_mappable/expected_files/models/human_type.dart
+++ b/swagger_parser/test/e2e/tests/xof/discriminated_any_of_complete_mapping_mappable/expected_files/models/human_type.dart
@@ -6,7 +6,7 @@ import 'package:dart_mappable/dart_mappable.dart';
 
 part 'human_type.mapper.dart';
 
-@MappableEnum(defaultValue: 'unknown')
+@MappableEnum(defaultValue: HumanType.unknown)
 enum HumanType {
   @MappableValue('Human')
   human,
diff --git a/swagger_parser/test/e2e/tests/xof/discriminated_one_of.3.0_mappable/expected_files/models/android_device_type.dart b/swagger_parser/test/e2e/tests/xof/discriminated_one_of.3.0_mappable/expected_files/models/android_device_type.dart
index 293b64ed..aba04589 100644
--- a/swagger_parser/test/e2e/tests/xof/discriminated_one_of.3.0_mappable/expected_files/models/android_device_type.dart
+++ b/swagger_parser/test/e2e/tests/xof/discriminated_one_of.3.0_mappable/expected_files/models/android_device_type.dart
@@ -6,7 +6,7 @@ import 'package:dart_mappable/dart_mappable.dart';
 
 part 'android_device_type.mapper.dart';
 
-@MappableEnum(defaultValue: 'unknown')
+@MappableEnum(defaultValue: AndroidDeviceType.unknown)
 enum AndroidDeviceType {
   @MappableValue('android')
   android,
diff --git a/swagger_parser/test/e2e/tests/xof/discriminated_one_of.3.0_mappable/expected_files/models/cat_type.dart b/swagger_parser/test/e2e/tests/xof/discriminated_one_of.3.0_mappable/expected_files/models/cat_type.dart
index d8e8a4fb..5cc70280 100644
--- a/swagger_parser/test/e2e/tests/xof/discriminated_one_of.3.0_mappable/expected_files/models/cat_type.dart
+++ b/swagger_parser/test/e2e/tests/xof/discriminated_one_of.3.0_mappable/expected_files/models/cat_type.dart
@@ -6,7 +6,7 @@ import 'package:dart_mappable/dart_mappable.dart';
 
 part 'cat_type.mapper.dart';
 
-@MappableEnum(defaultValue: 'unknown')
+@MappableEnum(defaultValue: CatType.unknown)
 enum CatType {
   @MappableValue('Cat')
   cat,
diff --git a/swagger_parser/test/e2e/tests/xof/discriminated_one_of.3.0_mappable/expected_files/models/dog_type.dart b/swagger_parser/test/e2e/tests/xof/discriminated_one_of.3.0_mappable/expected_files/models/dog_type.dart
index e59a551e..0e85b304 100644
--- a/swagger_parser/test/e2e/tests/xof/discriminated_one_of.3.0_mappable/expected_files/models/dog_type.dart
+++ b/swagger_parser/test/e2e/tests/xof/discriminated_one_of.3.0_mappable/expected_files/models/dog_type.dart
@@ -6,7 +6,7 @@ import 'package:dart_mappable/dart_mappable.dart';
 
 part 'dog_type.mapper.dart';
 
-@MappableEnum(defaultValue: 'unknown')
+@MappableEnum(defaultValue: DogType.unknown)
 enum DogType {
   @MappableValue('Dog')
   dog,
diff --git a/swagger_parser/test/e2e/tests/xof/discriminated_one_of.3.0_mappable/expected_files/models/human_type.dart b/swagger_parser/test/e2e/tests/xof/discriminated_one_of.3.0_mappable/expected_files/models/human_type.dart
index 88a53eba..25c6a9d5 100644
--- a/swagger_parser/test/e2e/tests/xof/discriminated_one_of.3.0_mappable/expected_files/models/human_type.dart
+++ b/swagger_parser/test/e2e/tests/xof/discriminated_one_of.3.0_mappable/expected_files/models/human_type.dart
@@ -6,7 +6,7 @@ import 'package:dart_mappable/dart_mappable.dart';
 
 part 'human_type.mapper.dart';
 
-@MappableEnum(defaultValue: 'unknown')
+@MappableEnum(defaultValue: HumanType.unknown)
 enum HumanType {
   @MappableValue('Human')
   human,
diff --git a/swagger_parser/test/e2e/tests/xof/discriminated_one_of.3.0_mappable/expected_files/models/ios_device_type.dart b/swagger_parser/test/e2e/tests/xof/discriminated_one_of.3.0_mappable/expected_files/models/ios_device_type.dart
index b06073c3..5867d58b 100644
--- a/swagger_parser/test/e2e/tests/xof/discriminated_one_of.3.0_mappable/expected_files/models/ios_device_type.dart
+++ b/swagger_parser/test/e2e/tests/xof/discriminated_one_of.3.0_mappable/expected_files/models/ios_device_type.dart
@@ -6,7 +6,7 @@ import 'package:dart_mappable/dart_mappable.dart';
 
 part 'ios_device_type.mapper.dart';
 
-@MappableEnum(defaultValue: 'unknown')
+@MappableEnum(defaultValue: IosDeviceType.unknown)
 enum IosDeviceType {
   @MappableValue('ios')
   ios,
diff --git a/swagger_parser/test/e2e/tests/xof/fallback_union_mappable/expected_files/models/cat_type.dart b/swagger_parser/test/e2e/tests/xof/fallback_union_mappable/expected_files/models/cat_type.dart
index b3b6e32c..60a11c0c 100644
--- a/swagger_parser/test/e2e/tests/xof/fallback_union_mappable/expected_files/models/cat_type.dart
+++ b/swagger_parser/test/e2e/tests/xof/fallback_union_mappable/expected_files/models/cat_type.dart
@@ -6,7 +6,7 @@ import 'package:dart_mappable/dart_mappable.dart';
 
 part 'cat_type.mapper.dart';
 
-@MappableEnum(defaultValue: 'unknown')
+@MappableEnum(defaultValue: CatType.unknown)
 enum CatType {
   @MappableValue('Cat')
   cat,
diff --git a/swagger_parser/test/e2e/tests/xof/fallback_union_mappable/expected_files/models/dog_type.dart b/swagger_parser/test/e2e/tests/xof/fallback_union_mappable/expected_files/models/dog_type.dart
index 36971040..1011c7bb 100644
--- a/swagger_parser/test/e2e/tests/xof/fallback_union_mappable/expected_files/models/dog_type.dart
+++ b/swagger_parser/test/e2e/tests/xof/fallback_union_mappable/expected_files/models/dog_type.dart
@@ -6,7 +6,7 @@ import 'package:dart_mappable/dart_mappable.dart';
 
 part 'dog_type.mapper.dart';
 
-@MappableEnum(defaultValue: 'unknown')
+@MappableEnum(defaultValue: DogType.unknown)
 enum DogType {
   @MappableValue('Dog')
   dog,
diff --git a/swagger_parser/test/e2e/tests/xof/fallback_union_mappable/expected_files/models/human_type.dart b/swagger_parser/test/e2e/tests/xof/fallback_union_mappable/expected_files/models/human_type.dart
index de1f1172..5202664c 100644
--- a/swagger_parser/test/e2e/tests/xof/fallback_union_mappable/expected_files/models/human_type.dart
+++ b/swagger_parser/test/e2e/tests/xof/fallback_union_mappable/expected_files/models/human_type.dart
@@ -6,7 +6,7 @@ import 'package:dart_mappable/dart_mappable.dart';
 
 part 'human_type.mapper.dart';
 
-@MappableEnum(defaultValue: 'unknown')
+@MappableEnum(defaultValue: HumanType.unknown)
 enum HumanType {
   @MappableValue('Human')
   human,