diff --git a/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/Descriptor.php b/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/Descriptor.php
index 64c296e813671..09128274d9903 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/Descriptor.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Console/Descriptor/Descriptor.php
@@ -343,9 +343,9 @@ private function getContainerEnvVars(ContainerBuilder $container): array
     protected function getServiceEdges(ContainerBuilder $builder, string $serviceId): array
     {
         try {
-            return array_map(function (ServiceReferenceGraphEdge $edge) {
+            return array_values(array_unique(array_map(function (ServiceReferenceGraphEdge $edge) {
                 return $edge->getSourceNode()->getId();
-            }, $builder->getCompiler()->getServiceReferenceGraph()->getNode($serviceId)->getInEdges());
+            }, $builder->getCompiler()->getServiceReferenceGraph()->getNode($serviceId)->getInEdges())));
         } catch (InvalidArgumentException $exception) {
             return [];
         }