diff --git a/packages/dynamite/dynamite/lib/src/builder/ofs_builder.dart b/packages/dynamite/dynamite/lib/src/builder/ofs_builder.dart
index 11bab57b..5412459e 100644
--- a/packages/dynamite/dynamite/lib/src/builder/ofs_builder.dart
+++ b/packages/dynamite/dynamite/lib/src/builder/ofs_builder.dart
@@ -40,12 +40,10 @@ TypeResult resolveAllOf(
 
         interfaceClass = object;
       } else {
-        final interfaceName = schema.ofs!.length == 1 ? identifier : '${identifier}_${schema.allOf!.indexOf(s)}';
-
         interfaceClass = resolveInterface(
           spec,
           state,
-          interfaceName,
+          '${identifier}_${schema.allOf!.indexOf(s)}',
           s,
         );
       }
diff --git a/packages/dynamite/dynamite_end_to_end_test/lib/all_of.openapi.dart b/packages/dynamite/dynamite_end_to_end_test/lib/all_of.openapi.dart
index 2edb2c9d..4fa14e4a 100644
--- a/packages/dynamite/dynamite_end_to_end_test/lib/all_of.openapi.dart
+++ b/packages/dynamite/dynamite_end_to_end_test/lib/all_of.openapi.dart
@@ -57,10 +57,34 @@ abstract class ObjectAllOf implements ObjectAllOfInterface, Built<ObjectAllOf, O
   static Serializer<ObjectAllOf> get serializer => _$objectAllOfSerializer;
 }
 
+@BuiltValue(instantiable: false)
+abstract interface class OneObjectAllOf_0Interface {
+  @BuiltValueField(wireName: 'attribute-allOf')
+  String get attributeAllOf;
+}
+
+@BuiltValue(instantiable: false)
+abstract interface class OneObjectAllOfInterface implements OneObjectAllOf_0Interface {}
+
+abstract class OneObjectAllOf implements OneObjectAllOfInterface, Built<OneObjectAllOf, OneObjectAllOfBuilder> {
+  factory OneObjectAllOf([final void Function(OneObjectAllOfBuilder)? b]) = _$OneObjectAllOf;
+
+  const OneObjectAllOf._();
+
+  factory OneObjectAllOf.fromJson(final Map<String, dynamic> json) =>
+      _jsonSerializers.deserializeWith(serializer, json)!;
+
+  Map<String, dynamic> toJson() => _jsonSerializers.serializeWith(serializer, this)! as Map<String, dynamic>;
+
+  static Serializer<OneObjectAllOf> get serializer => _$oneObjectAllOfSerializer;
+}
+
 // coverage:ignore-start
 final Serializers _serializers = (Serializers().toBuilder()
       ..addBuilderFactory(const FullType(ObjectAllOf), ObjectAllOf.new)
-      ..add(ObjectAllOf.serializer))
+      ..add(ObjectAllOf.serializer)
+      ..addBuilderFactory(const FullType(OneObjectAllOf), OneObjectAllOf.new)
+      ..add(OneObjectAllOf.serializer))
     .build();
 
 final Serializers _jsonSerializers = (_serializers.toBuilder()
diff --git a/packages/dynamite/dynamite_end_to_end_test/lib/all_of.openapi.g.dart b/packages/dynamite/dynamite_end_to_end_test/lib/all_of.openapi.g.dart
index 32b10f06..5fe644f5 100644
--- a/packages/dynamite/dynamite_end_to_end_test/lib/all_of.openapi.g.dart
+++ b/packages/dynamite/dynamite_end_to_end_test/lib/all_of.openapi.g.dart
@@ -7,6 +7,7 @@ part of 'all_of.openapi.dart';
 // **************************************************************************
 
 Serializer<ObjectAllOf> _$objectAllOfSerializer = _$ObjectAllOfSerializer();
+Serializer<OneObjectAllOf> _$oneObjectAllOfSerializer = _$OneObjectAllOfSerializer();
 
 class _$ObjectAllOfSerializer implements StructuredSerializer<ObjectAllOf> {
   @override
@@ -51,6 +52,44 @@ class _$ObjectAllOfSerializer implements StructuredSerializer<ObjectAllOf> {
   }
 }
 
+class _$OneObjectAllOfSerializer implements StructuredSerializer<OneObjectAllOf> {
+  @override
+  final Iterable<Type> types = const [OneObjectAllOf, _$OneObjectAllOf];
+  @override
+  final String wireName = 'OneObjectAllOf';
+
+  @override
+  Iterable<Object?> serialize(Serializers serializers, OneObjectAllOf object,
+      {FullType specifiedType = FullType.unspecified}) {
+    final result = <Object?>[
+      'attribute-allOf',
+      serializers.serialize(object.attributeAllOf, specifiedType: const FullType(String)),
+    ];
+
+    return result;
+  }
+
+  @override
+  OneObjectAllOf deserialize(Serializers serializers, Iterable<Object?> serialized,
+      {FullType specifiedType = FullType.unspecified}) {
+    final result = OneObjectAllOfBuilder();
+
+    final iterator = serialized.iterator;
+    while (iterator.moveNext()) {
+      final key = iterator.current! as String;
+      iterator.moveNext();
+      final Object? value = iterator.current;
+      switch (key) {
+        case 'attribute-allOf':
+          result.attributeAllOf = serializers.deserialize(value, specifiedType: const FullType(String))! as String;
+          break;
+      }
+    }
+
+    return result.build();
+  }
+}
+
 abstract mixin class ObjectAllOf_0InterfaceBuilder {
   void replace(ObjectAllOf_0Interface other);
   void update(void Function(ObjectAllOf_0InterfaceBuilder) updates);
@@ -167,4 +206,96 @@ class ObjectAllOfBuilder implements Builder<ObjectAllOf, ObjectAllOfBuilder>, Ob
   }
 }
 
+abstract mixin class OneObjectAllOf_0InterfaceBuilder {
+  void replace(OneObjectAllOf_0Interface other);
+  void update(void Function(OneObjectAllOf_0InterfaceBuilder) updates);
+  String? get attributeAllOf;
+  set attributeAllOf(String? attributeAllOf);
+}
+
+abstract mixin class OneObjectAllOfInterfaceBuilder implements OneObjectAllOf_0InterfaceBuilder {
+  void replace(covariant OneObjectAllOfInterface other);
+  void update(void Function(OneObjectAllOfInterfaceBuilder) updates);
+  String? get attributeAllOf;
+  set attributeAllOf(covariant String? attributeAllOf);
+}
+
+class _$OneObjectAllOf extends OneObjectAllOf {
+  @override
+  final String attributeAllOf;
+
+  factory _$OneObjectAllOf([void Function(OneObjectAllOfBuilder)? updates]) =>
+      (OneObjectAllOfBuilder()..update(updates))._build();
+
+  _$OneObjectAllOf._({required this.attributeAllOf}) : super._() {
+    BuiltValueNullFieldError.checkNotNull(attributeAllOf, r'OneObjectAllOf', 'attributeAllOf');
+  }
+
+  @override
+  OneObjectAllOf rebuild(void Function(OneObjectAllOfBuilder) updates) => (toBuilder()..update(updates)).build();
+
+  @override
+  OneObjectAllOfBuilder toBuilder() => OneObjectAllOfBuilder()..replace(this);
+
+  @override
+  bool operator ==(Object other) {
+    if (identical(other, this)) return true;
+    return other is OneObjectAllOf && attributeAllOf == other.attributeAllOf;
+  }
+
+  @override
+  int get hashCode {
+    var _$hash = 0;
+    _$hash = $jc(_$hash, attributeAllOf.hashCode);
+    _$hash = $jf(_$hash);
+    return _$hash;
+  }
+
+  @override
+  String toString() {
+    return (newBuiltValueToStringHelper(r'OneObjectAllOf')..add('attributeAllOf', attributeAllOf)).toString();
+  }
+}
+
+class OneObjectAllOfBuilder implements Builder<OneObjectAllOf, OneObjectAllOfBuilder>, OneObjectAllOfInterfaceBuilder {
+  _$OneObjectAllOf? _$v;
+
+  String? _attributeAllOf;
+  String? get attributeAllOf => _$this._attributeAllOf;
+  set attributeAllOf(covariant String? attributeAllOf) => _$this._attributeAllOf = attributeAllOf;
+
+  OneObjectAllOfBuilder();
+
+  OneObjectAllOfBuilder get _$this {
+    final $v = _$v;
+    if ($v != null) {
+      _attributeAllOf = $v.attributeAllOf;
+      _$v = null;
+    }
+    return this;
+  }
+
+  @override
+  void replace(covariant OneObjectAllOf other) {
+    ArgumentError.checkNotNull(other, 'other');
+    _$v = other as _$OneObjectAllOf;
+  }
+
+  @override
+  void update(void Function(OneObjectAllOfBuilder)? updates) {
+    if (updates != null) updates(this);
+  }
+
+  @override
+  OneObjectAllOf build() => _build();
+
+  _$OneObjectAllOf _build() {
+    final _$result = _$v ??
+        _$OneObjectAllOf._(
+            attributeAllOf: BuiltValueNullFieldError.checkNotNull(attributeAllOf, r'OneObjectAllOf', 'attributeAllOf'));
+    replace(_$result);
+    return _$result;
+  }
+}
+
 // ignore_for_file: deprecated_member_use_from_same_package,type=lint
diff --git a/packages/dynamite/dynamite_end_to_end_test/lib/all_of.openapi.json b/packages/dynamite/dynamite_end_to_end_test/lib/all_of.openapi.json
index b56feda1..c8afda95 100644
--- a/packages/dynamite/dynamite_end_to_end_test/lib/all_of.openapi.json
+++ b/packages/dynamite/dynamite_end_to_end_test/lib/all_of.openapi.json
@@ -32,6 +32,22 @@
                         }
                     }
                 ]
+            },
+            "OneObjectAllOf": {
+                "description": "All of with one object value.",
+                "allOf": [
+                    {
+                        "type": "object",
+                        "required": [
+                            "attribute-allOf"
+                        ],
+                        "properties": {
+                            "attribute-allOf": {
+                                "type": "string"
+                            }
+                        }
+                    }
+                ]
             }
         }
     },