diff --git a/Loader/SymfonyFixturesLoader.php b/Loader/SymfonyFixturesLoader.php
index c61c6356..69376c2a 100644
--- a/Loader/SymfonyFixturesLoader.php
+++ b/Loader/SymfonyFixturesLoader.php
@@ -55,6 +55,8 @@ public function addFixture(FixtureInterface $fixture) : void
 
         if ($fixture instanceof FixtureGroupInterface) {
             $this->addGroupsFixtureMapping($class, $fixture::getGroups());
+        } else {
+            $this->addGroupsFixtureMapping($class, ['Default']);
         }
 
         parent::addFixture($fixture);
diff --git a/Tests/Fixtures/FooBundle/DataFixtures/NoGroupFixtures.php b/Tests/Fixtures/FooBundle/DataFixtures/NoGroupFixtures.php
new file mode 100644
index 00000000..ef764863
--- /dev/null
+++ b/Tests/Fixtures/FooBundle/DataFixtures/NoGroupFixtures.php
@@ -0,0 +1,16 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Doctrine\Bundle\FixturesBundle\Tests\Fixtures\FooBundle\DataFixtures;
+
+use Doctrine\Bundle\FixturesBundle\ORMFixtureInterface;
+use Doctrine\Common\Persistence\ObjectManager;
+
+class NoGroupFixtures  implements ORMFixtureInterface
+{
+    public function load(ObjectManager $manager)
+    {
+        //
+    }
+}
diff --git a/Tests/IntegrationTest.php b/Tests/IntegrationTest.php
index 6959e2e0..f76b0078 100644
--- a/Tests/IntegrationTest.php
+++ b/Tests/IntegrationTest.php
@@ -7,6 +7,7 @@
 use Doctrine\Bundle\FixturesBundle\DependencyInjection\CompilerPass\FixturesCompilerPass;
 use Doctrine\Bundle\FixturesBundle\DoctrineFixturesBundle;
 use Doctrine\Bundle\FixturesBundle\Tests\Fixtures\FooBundle\DataFixtures\DependentOnRequiredConstructorArgsFixtures;
+use Doctrine\Bundle\FixturesBundle\Tests\Fixtures\FooBundle\DataFixtures\NoGroupFixtures;
 use Doctrine\Bundle\FixturesBundle\Tests\Fixtures\FooBundle\DataFixtures\OtherFixtures;
 use Doctrine\Bundle\FixturesBundle\Tests\Fixtures\FooBundle\DataFixtures\RequiredConstructorArgsFixtures;
 use Doctrine\Bundle\FixturesBundle\Tests\Fixtures\FooBundle\DataFixtures\WithDependenciesFixtures;
@@ -304,6 +305,38 @@ public function testLoadFixturesByShortName() : void
             OtherFixtures::class,
         ], $actualFixtureClasses);
     }
+
+    public function testLoadFixturesInDefaultGroup() : void
+    {
+        $kernel = new IntegrationTestKernel('dev', true);
+        $kernel->addServices(static function (ContainerBuilder $c) : void {
+            // has a "staging" group via the getGroups() method
+            $c->autowire(OtherFixtures::class)
+                ->addTag(FixturesCompilerPass::FIXTURE_TAG);
+
+            // no getGroups() method
+            $c->autowire(NoGroupFixtures::class)
+                ->addTag(FixturesCompilerPass::FIXTURE_TAG);
+
+            $c->setAlias('test.doctrine.fixtures.loader', new Alias('doctrine.fixtures.loader', true));
+        });
+        $kernel->boot();
+        $container = $kernel->getContainer();
+
+        /** @var ContainerAwareLoader $loader */
+        $loader = $container->get('test.doctrine.fixtures.loader');
+
+        $actualFixtures = $loader->getFixtures(['Default']);
+
+        $this->assertCount(1, $actualFixtures);
+        $actualFixtureClasses = array_map(static function ($fixture) {
+            return get_class($fixture);
+        }, $actualFixtures);
+
+        $this->assertSame([
+            NoGroupFixtures::class,
+        ], $actualFixtureClasses);
+    }
 }
 
 class IntegrationTestKernel extends Kernel