diff --git a/application/controllers/HostController.php b/application/controllers/HostController.php
index d30ea765d..ed716fd8b 100644
--- a/application/controllers/HostController.php
+++ b/application/controllers/HostController.php
@@ -373,6 +373,7 @@ public function completeAction(): void
     {
         $suggestions = (new ObjectSuggestions())
             ->setModel(DependencyNode::class)
+            ->onlyWithCustomVarSources(['host', 'service', 'hostgroup', 'servicegroup'])
             ->setBaseFilter(Filter::equal("child.host.id", $this->host->id))
             ->forRequest($this->getServerRequest());
 
@@ -383,6 +384,7 @@ public function childrenCompleteAction(): void
     {
         $suggestions = (new ObjectSuggestions())
             ->setModel(DependencyNode::class)
+            ->onlyWithCustomVarSources(['host', 'service', 'hostgroup', 'servicegroup'])
             ->setBaseFilter(Filter::equal("parent.host.id", $this->host->id))
             ->forRequest($this->getServerRequest());
 
diff --git a/application/controllers/ServiceController.php b/application/controllers/ServiceController.php
index fbfb08ef6..c7c540a86 100644
--- a/application/controllers/ServiceController.php
+++ b/application/controllers/ServiceController.php
@@ -336,6 +336,7 @@ public function completeAction(): void
     {
         $suggestions = (new ObjectSuggestions())
             ->setModel(DependencyNode::class)
+            ->onlyWithCustomVarSources(['host', 'service', 'hostgroup', 'servicegroup'])
             ->setBaseFilter(Filter::equal("child.service.id", $this->service->id))
             ->forRequest($this->getServerRequest());
 
@@ -346,6 +347,7 @@ public function childrenCompleteAction(): void
     {
         $suggestions = (new ObjectSuggestions())
             ->setModel(DependencyNode::class)
+            ->onlyWithCustomVarSources(['host', 'service', 'hostgroup', 'servicegroup'])
             ->setBaseFilter(Filter::equal("parent.service.id", $this->service->id))
             ->forRequest($this->getServerRequest());