diff --git a/src/lib/Specification/Content/ContentHaveAssetRelation.php b/src/lib/Specification/Content/ContentHaveAssetRelation.php
index 746777d747..f602a9ae4d 100644
--- a/src/lib/Specification/Content/ContentHaveAssetRelation.php
+++ b/src/lib/Specification/Content/ContentHaveAssetRelation.php
@@ -11,8 +11,8 @@
 use Ibexa\AdminUi\Exception\InvalidArgumentException;
 use Ibexa\Contracts\Core\Repository\ContentService;
 use Ibexa\Contracts\Core\Repository\Values\Content\Content;
+use Ibexa\Contracts\Core\Repository\Values\Content\RelationType;
 use Ibexa\Contracts\Core\Specification\AbstractSpecification;
-use Ibexa\Core\Repository\Values\Content\Relation;
 
 class ContentHaveAssetRelation extends AbstractSpecification
 {
@@ -41,14 +41,6 @@ public function isSatisfiedBy($item): bool
             throw new InvalidArgumentException($item, sprintf('Must be an instance of %s', Content::class));
         }
 
-        $relations = $this->contentService->loadRelations($item->versionInfo);
-
-        foreach ($relations as $relation) {
-            if (Relation::ASSET === $relation->type) {
-                return true;
-            }
-        }
-
-        return false;
+        return $this->contentService->countRelations($item->versionInfo, RelationType::ASSET) > 0;
     }
 }
diff --git a/src/lib/Specification/Content/ContentHaveUniqueRelation.php b/src/lib/Specification/Content/ContentHaveUniqueRelation.php
index 0cab15f362..22b48a32aa 100644
--- a/src/lib/Specification/Content/ContentHaveUniqueRelation.php
+++ b/src/lib/Specification/Content/ContentHaveUniqueRelation.php
@@ -10,9 +10,11 @@
 
 use Ibexa\AdminUi\Exception\InvalidArgumentException;
 use Ibexa\Contracts\Core\Repository\ContentService;
+use Ibexa\Contracts\Core\Repository\Iterator\BatchIterator;
+use Ibexa\Contracts\Core\Repository\Iterator\BatchIteratorAdapter\RelationListIteratorAdapter;
 use Ibexa\Contracts\Core\Repository\Values\Content\Content;
+use Ibexa\Contracts\Core\Repository\Values\Content\RelationType;
 use Ibexa\Contracts\Core\Specification\AbstractSpecification;
-use Ibexa\Core\Repository\Values\Content\Relation;
 
 class ContentHaveUniqueRelation extends AbstractSpecification
 {
@@ -41,12 +43,21 @@ public function isSatisfiedBy($item): bool
             throw new InvalidArgumentException($item, sprintf('Must be an instance of %s', Content::class));
         }
 
-        $relations = $this->contentService->loadRelations($item->versionInfo);
+        $relationListIterator = new BatchIterator(
+            new RelationListIteratorAdapter(
+                $this->contentService,
+                $item->getVersionInfo(),
+                RelationType::ASSET
+            )
+        );
 
-        foreach ($relations as $relation) {
-            if (Relation::ASSET === $relation->type) {
+        /** @var \Ibexa\Contracts\Core\Repository\Values\Content\RelationList\Item\RelationListItem $relationItem */
+        foreach ($relationListIterator as $relationItem) {
+            if ($relationItem->hasRelation()) {
+                /** @var \Ibexa\Contracts\Core\Repository\Values\Content\Relation $relation */
+                $relation = $relationItem->getRelation();
                 $relationsFromAssetSide = $this->contentService->countReverseRelations(
-                    $relation->destinationContentInfo
+                    $relation->getDestinationContentInfo()
                 );
 
                 if ($relationsFromAssetSide > 1) {