diff --git a/src/app/Packages/Domains/WorldHeritage/Adapter/AlgoliaWorldHeritageSearchAdapter.php b/src/app/Packages/Domains/WorldHeritage/Adapter/AlgoliaWorldHeritageSearchAdapter.php
index 6053bba..388d44e 100644
--- a/src/app/Packages/Domains/WorldHeritage/Adapter/AlgoliaWorldHeritageSearchAdapter.php
+++ b/src/app/Packages/Domains/WorldHeritage/Adapter/AlgoliaWorldHeritageSearchAdapter.php
@@ -6,6 +6,7 @@
 use App\Packages\Domains\WorldHeritage\Ports\Dto\HeritageSearchResult;
 use App\Packages\Domains\WorldHeritage\Ports\WorldHeritageSearchPort;
 use App\Packages\Features\QueryUseCases\ListQuery\AlgoliaSearchListQuery;
+use Illuminate\Support\Facades\Log;
 
 class AlgoliaWorldHeritageSearchAdapter implements WorldHeritageSearchPort
 {
@@ -152,11 +153,26 @@ public function search(
 
         $hits = $response['hits'] ?? [];
 
-        $ids = array_values(array_filter(array_map(static function (array $h) {
-            return isset($h['id'])
-                ? (int) $h['id']
-                : (isset($h['objectID']) ? (int) $h['objectID'] : null);
-        }, $hits)));
+        $ids = [];
+        foreach ($hits as $hit) {
+            $rawId = $hit['id'] ?? $hit['objectID'] ?? null;
+
+            if ($rawId === null) {
+                continue;
+            }
+
+            if (!is_numeric($rawId)) {
+                // Don't silently coerce a non-numeric id to 0 and drop it via
+                // array_filter: that would hide an Algolia/DB data inconsistency.
+                Log::warning('Algolia search hit has a non-numeric id', [
+                    'id' => $hit['id'] ?? null,
+                    'objectID' => $hit['objectID'] ?? null,
+                ]);
+                continue;
+            }
+
+            $ids[] = (int) $rawId;
+        }
 
         $nbHits = (int) ($response['nbHits'] ?? 0);
         $nbPages = (int) ($response['nbPages'] ?? 0);
diff --git a/src/app/Packages/Domains/WorldHeritage/Tests/AlgoliaWorldHeritageSearchAdapterTest.php b/src/app/Packages/Domains/WorldHeritage/Tests/AlgoliaWorldHeritageSearchAdapterTest.php
index 5d500db..888c1c4 100644
--- a/src/app/Packages/Domains/WorldHeritage/Tests/AlgoliaWorldHeritageSearchAdapterTest.php
+++ b/src/app/Packages/Domains/WorldHeritage/Tests/AlgoliaWorldHeritageSearchAdapterTest.php
@@ -6,8 +6,9 @@
 use App\Enums\StudyRegion;
 use App\Packages\Domains\WorldHeritage\Adapter\AlgoliaWorldHeritageSearchAdapter;
 use App\Packages\Features\QueryUseCases\ListQuery\AlgoliaSearchListQuery;
+use Illuminate\Support\Facades\Log;
 use Mockery;
-use PHPUnit\Framework\TestCase;
+use Tests\TestCase;
 
 class AlgoliaWorldHeritageSearchAdapterTest extends TestCase
 {
@@ -216,6 +217,53 @@ public function test_search_by_country_name_that_does_not_resolve_still_runs_ful
         $this->assertSame([7, 8], $result->ids);
     }
 
+    public function test_search_logs_and_skips_a_hit_with_a_non_numeric_id_instead_of_silently_dropping_it(): void
+    {
+        $indexName = 'world_heritage';
+        $adapter = new AlgoliaWorldHeritageSearchAdapter($this->client, $indexName);
+
+        $q = new AlgoliaSearchListQuery(
+            keyword: 'temple',
+            countryName: null,
+            countryIso3: null,
+            region: null,
+            category: null,
+            yearFrom: null,
+            yearTo: null,
+            criteria: [],
+            isEndangered: null,
+            currentPage: 1,
+            perPage: 30,
+        );
+
+        $this->client
+            ->shouldReceive('searchSingleIndex')
+            ->once()
+            ->andReturn([
+                'hits' => [
+                    ['id' => 10],
+                    ['id' => 'not-a-number', 'objectID' => 'broken-1'],
+                ],
+                'nbHits' => 2,
+                'nbPages' => 1,
+                'page' => 0,
+                'hitsPerPage' => 30,
+            ]);
+
+        Log::shouldReceive('warning')
+            ->once()
+            ->with('Algolia search hit has a non-numeric id', [
+                'id' => 'not-a-number',
+                'objectID' => 'broken-1',
+            ]);
+
+        $result = $adapter->search($q, currentPage: 1, perPage: 30);
+
+        // The valid hit survives; the broken one is logged and skipped rather
+        // than silently coerced to 0 and dropped via array_filter.
+        $this->assertSame([10], $result->ids);
+    }
+
     public function test_search_combines_keyword_with_country_iso3_filter_instead_of_dropping_keyword(): void
     {
         $indexName = 'world_heritage';