diff --git a/inc/Engine/Media/AboveTheFold/WarmUp/Controller.php b/inc/Engine/Media/AboveTheFold/WarmUp/Controller.php
index 8493cc1eac..86750d4239 100644
--- a/inc/Engine/Media/AboveTheFold/WarmUp/Controller.php
+++ b/inc/Engine/Media/AboveTheFold/WarmUp/Controller.php
@@ -235,11 +235,16 @@ public function add_wpr_imagedimensions_query_arg( string $url ): string {
 	}
 
 	/**
-	 * Check if the current request is for mobile.
+	 * Check if the mobile cache is set.
 	 *
 	 * @return bool
 	 */
 	private function is_mobile(): bool {
+		$plugin_version = (string) get_rocket_option( 'version', '' );
+		if ( ! $plugin_version ) { // We are warming up a fresh installation. Options are not set yet.
+			return true;
+		}
+
 		return $this->options->get( 'cache_mobile', 0 ) && $this->options->get( 'do_caching_mobile_files', 0 );
 	}
 }
diff --git a/tests/Fixtures/inc/Engine/Media/AboveTheFold/WarmUp/Controller/sendToSass.php b/tests/Fixtures/inc/Engine/Media/AboveTheFold/WarmUp/Controller/sendToSass.php
new file mode 100644
index 0000000000..5bcc39b952
--- /dev/null
+++ b/tests/Fixtures/inc/Engine/Media/AboveTheFold/WarmUp/Controller/sendToSass.php
@@ -0,0 +1,20 @@
+<?php
+
+return [
+	'testShouldCallATFQueueOnce' => [
+		'config' => [
+			'url' => 'http://example.com',
+			'device' => 'desktop',
+			'get_rocket_option' => 'true'
+		],
+		'expected' => 'http://example.com',
+	],
+	'testShouldCallATFQueueTwice' => [
+		'config' => [
+			'device' => 'mobile',
+			'url' => 'http://example.com',
+			'get_rocket_option' => ''
+		],
+		'expected' => 'http://example.com/?wpr_imagedimensions=1',
+	],
+];
diff --git a/tests/Unit/inc/Engine/Media/AboveTheFold/WarmUp/Controller/sendToSass.php b/tests/Unit/inc/Engine/Media/AboveTheFold/WarmUp/Controller/sendToSass.php
new file mode 100644
index 0000000000..3d84363cbf
--- /dev/null
+++ b/tests/Unit/inc/Engine/Media/AboveTheFold/WarmUp/Controller/sendToSass.php
@@ -0,0 +1,69 @@
+<?php
+
+namespace WP_Rocket\tests\Unit\inc\Engine\Media\AboveTheFold\WarmUp\Controller;
+
+use WP_Rocket\Admin\Options_Data;
+use WP_Rocket\Engine\Common\Context\ContextInterface;
+use WP_Rocket\Engine\License\API\User;
+use WP_Rocket\Engine\Media\AboveTheFold\WarmUp\APIClient;
+use WP_Rocket\Engine\Media\AboveTheFold\WarmUp\Controller;
+use WP_Rocket\Engine\Media\AboveTheFold\WarmUp\Queue;
+use WP_Rocket\Tests\Unit\TestCase;
+use Brain\Monkey\Functions;
+use Mockery;
+
+class sendToSass extends TestCase {
+	private $user;
+	private $controller;
+	private $context;
+	private $queue;
+	private $options;
+
+	private $api_client;
+
+	protected function setUp(): void {
+		parent::setUp();
+
+		$this->context    = Mockery::mock( ContextInterface::class );
+		$this->options    = Mockery::mock( Options_Data::class );
+		$this->api_client = Mockery::mock( APIClient::class );
+		$this->user       = Mockery::mock( User::class );
+		$this->queue      = Mockery::mock( Queue::class );
+		$this->controller = new Controller( $this->context, $this->options, $this->api_client, $this->user, $this->queue );
+	}
+
+	/**
+	 * @dataProvider configTestData
+	 */
+	public function testShouldReturnExpected( $config, $expected ) {
+		$this->options->shouldReceive('get')
+			->with('cache_mobile', 0)
+			->andReturn(0);
+
+		if('desktop' === $config['device']) {
+			Functions\expect( 'get_rocket_option' )
+				->once()
+				->with( 'version', '' )
+				->andReturn( true );
+		}
+
+		$this->api_client->shouldReceive('add_to_atf_queue')
+			->with('http://example.com')
+			->once()
+			->andReturn([$config['url'], []]);
+
+		if('mobile' === $config['device']) {
+			Functions\expect( 'get_rocket_option' )
+				->once()
+				->with( 'version', '' )
+				->andReturn( '' );
+
+			$this->api_client->shouldReceive('add_to_atf_queue')
+				->with('http://example.com', $config['device'])
+				->once()
+				->andReturn([$config['url'], []]);
+		}
+
+		$this->controller->send_to_saas($config['url']);
+	}
+}