diff --git a/module/Common/src/Cache/RedisFactory.php b/module/Common/src/Cache/RedisFactory.php
index 6e7c864b..42118767 100644
--- a/module/Common/src/Cache/RedisFactory.php
+++ b/module/Common/src/Cache/RedisFactory.php
@@ -6,9 +6,8 @@ namespace Shlinkio\Shlink\Common\Cache;
 use Predis\Client as PredisClient;
 use Psr\Container\ContainerInterface;
 
-use function array_shift;
 use function count;
-use function is_array;
+use function explode;
 use function is_string;
 
 class RedisFactory
@@ -18,13 +17,11 @@ class RedisFactory
     public function __invoke(ContainerInterface $container): PredisClient
     {
         $redisConfig = $container->get('config')['redis'] ?? [];
+
         $servers = $redisConfig['servers'] ?? [];
+        $servers = is_string($servers) ? explode(',', $servers) : $servers;
+        $options = count($servers) <= 1 ? null : ['cluster' => 'redis'];
 
-        if (is_array($servers) && count($servers) === 1) {
-            $servers = array_shift($servers);
-        }
-
-        $options = is_string($servers) || count($servers) < 1 ? null : ['cluster' => 'redis'];
         return new PredisClient($servers, $options);
     }
 }
diff --git a/module/Common/test/Cache/RedisFactoryTest.php b/module/Common/test/Cache/RedisFactoryTest.php
index 765a3e8f..dbc1c9b8 100644
--- a/module/Common/test/Cache/RedisFactoryTest.php
+++ b/module/Common/test/Cache/RedisFactoryTest.php
@@ -54,5 +54,8 @@ class RedisFactoryTest extends TestCase
         yield 'empty cluster of servers' => [[
             'servers' => [],
         ], PredisCluster::class];
+        yield 'cluster of servers as string' => [[
+            'servers' => 'tcp://1.1.1.1:6379,tcp://2.2.2.2:6379',
+        ], RedisCluster::class];
     }
 }