diff --git a/packages/freezed_lint/example/lib/mixin_name.dart b/packages/freezed_lint/example/lib/mixin_name.dart
new file mode 100644
index 00000000..8664c1de
--- /dev/null
+++ b/packages/freezed_lint/example/lib/mixin_name.dart
@@ -0,0 +1,8 @@
+import 'package:freezed_annotation/freezed_annotation.dart';
+
+part 'mixin_name.freezed.dart';
+
+@freezed
+class _FooModel with _$FooModel {
+  const factory _FooModel() = __FooModel;
+}
diff --git a/packages/freezed_lint/example/lib/mixin_name.freezed.dart b/packages/freezed_lint/example/lib/mixin_name.freezed.dart
new file mode 100644
index 00000000..77ba758f
--- /dev/null
+++ b/packages/freezed_lint/example/lib/mixin_name.freezed.dart
@@ -0,0 +1,214 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+// coverage:ignore-file
+// ignore_for_file: type=lint
+// ignore_for_file: unused_element, deprecated_member_use, deprecated_member_use_from_same_package, use_function_type_syntax_for_parameters, unnecessary_const, avoid_init_to_null, invalid_override_different_default_values_named, prefer_expression_function_bodies, annotate_overrides, invalid_annotation_target, unnecessary_question_mark
+
+part of 'mixin_name.dart';
+
+// **************************************************************************
+// FreezedGenerator
+// **************************************************************************
+
+// dart format off
+T _$identity<T>(T value) => value;
+
+/// @nodoc
+mixin _$FooModel {
+  @override
+  bool operator ==(Object other) {
+    return identical(this, other) ||
+        (other.runtimeType == runtimeType && other is _FooModel);
+  }
+
+  @override
+  int get hashCode => runtimeType.hashCode;
+
+  @override
+  String toString() {
+    return '_FooModel()';
+  }
+}
+
+/// @nodoc
+class _$FooModelCopyWith<$Res> {
+  _$FooModelCopyWith(_FooModel _, $Res Function(_FooModel) __);
+}
+
+/// Adds pattern-matching-related methods to [_FooModel].
+extension _FooModelPatterns on _FooModel {
+  /// A variant of `map` that fallback to returning `orElse`.
+  ///
+  /// It is equivalent to doing:
+  /// ```dart
+  /// switch (sealedClass) {
+  ///   case final Subclass value:
+  ///     return ...;
+  ///   case _:
+  ///     return orElse();
+  /// }
+  /// ```
+
+  @optionalTypeArgs
+  TResult maybeMap<TResult extends Object?>(
+    TResult Function(__FooModel value)? $default, {
+    required TResult orElse(),
+  }) {
+    final _that = this;
+    switch (_that) {
+      case __FooModel() when $default != null:
+        return $default(_that);
+      case _:
+        return orElse();
+    }
+  }
+
+  /// A `switch`-like method, using callbacks.
+  ///
+  /// Callbacks receives the raw object, upcasted.
+  /// It is equivalent to doing:
+  /// ```dart
+  /// switch (sealedClass) {
+  ///   case final Subclass value:
+  ///     return ...;
+  ///   case final Subclass2 value:
+  ///     return ...;
+  /// }
+  /// ```
+
+  @optionalTypeArgs
+  TResult map<TResult extends Object?>(
+    TResult Function(__FooModel value) $default,
+  ) {
+    final _that = this;
+    switch (_that) {
+      case __FooModel():
+        return $default(_that);
+      case _:
+        throw StateError('Unexpected subclass');
+    }
+  }
+
+  /// A variant of `map` that fallback to returning `null`.
+  ///
+  /// It is equivalent to doing:
+  /// ```dart
+  /// switch (sealedClass) {
+  ///   case final Subclass value:
+  ///     return ...;
+  ///   case _:
+  ///     return null;
+  /// }
+  /// ```
+
+  @optionalTypeArgs
+  TResult? mapOrNull<TResult extends Object?>(
+    TResult? Function(__FooModel value)? $default,
+  ) {
+    final _that = this;
+    switch (_that) {
+      case __FooModel() when $default != null:
+        return $default(_that);
+      case _:
+        return null;
+    }
+  }
+
+  /// A variant of `when` that fallback to an `orElse` callback.
+  ///
+  /// It is equivalent to doing:
+  /// ```dart
+  /// switch (sealedClass) {
+  ///   case Subclass(:final field):
+  ///     return ...;
+  ///   case _:
+  ///     return orElse();
+  /// }
+  /// ```
+
+  @optionalTypeArgs
+  TResult maybeWhen<TResult extends Object?>(
+    TResult Function()? $default, {
+    required TResult orElse(),
+  }) {
+    final _that = this;
+    switch (_that) {
+      case __FooModel() when $default != null:
+        return $default();
+      case _:
+        return orElse();
+    }
+  }
+
+  /// A `switch`-like method, using callbacks.
+  ///
+  /// As opposed to `map`, this offers destructuring.
+  /// It is equivalent to doing:
+  /// ```dart
+  /// switch (sealedClass) {
+  ///   case Subclass(:final field):
+  ///     return ...;
+  ///   case Subclass2(:final field2):
+  ///     return ...;
+  /// }
+  /// ```
+
+  @optionalTypeArgs
+  TResult when<TResult extends Object?>(
+    TResult Function() $default,
+  ) {
+    final _that = this;
+    switch (_that) {
+      case __FooModel():
+        return $default();
+      case _:
+        throw StateError('Unexpected subclass');
+    }
+  }
+
+  /// A variant of `when` that fallback to returning `null`
+  ///
+  /// It is equivalent to doing:
+  /// ```dart
+  /// switch (sealedClass) {
+  ///   case Subclass(:final field):
+  ///     return ...;
+  ///   case _:
+  ///     return null;
+  /// }
+  /// ```
+
+  @optionalTypeArgs
+  TResult? whenOrNull<TResult extends Object?>(
+    TResult? Function()? $default,
+  ) {
+    final _that = this;
+    switch (_that) {
+      case __FooModel() when $default != null:
+        return $default();
+      case _:
+        return null;
+    }
+  }
+}
+
+/// @nodoc
+
+class __FooModel implements _FooModel {
+  const __FooModel();
+
+  @override
+  bool operator ==(Object other) {
+    return identical(this, other) ||
+        (other.runtimeType == runtimeType && other is __FooModel);
+  }
+
+  @override
+  int get hashCode => runtimeType.hashCode;
+
+  @override
+  String toString() {
+    return '_FooModel()';
+  }
+}
+
+// dart format on
diff --git a/packages/freezed_lint/lib/src/missing_mixin.dart b/packages/freezed_lint/lib/src/missing_mixin.dart
index cdbd4ce2..608bea71 100644
--- a/packages/freezed_lint/lib/src/missing_mixin.dart
+++ b/packages/freezed_lint/lib/src/missing_mixin.dart
@@ -24,7 +24,9 @@ class MissingMixin extends DartLintRule {
       final annotation = freezedAnnotationChecker.hasAnnotationOfExact(element);
       if (!annotation) return;
 
-      final name = '_\$${element.name}';
+      final name = element.name.startsWith('_')
+          ? '_\$${element.name.substring(1)}'
+          : '_\$${element.name}';
       final withClause = node.withClause;
       if (withClause == null) {
         reporter.atElement(element, _code, arguments: [name]);