diff --git a/src/module-elasticsuite-indices/Model/IndexStatusProvider.php b/src/module-elasticsuite-indices/Model/IndexStatusProvider.php
index 74b1e140f..6ca065186 100644
--- a/src/module-elasticsuite-indices/Model/IndexStatusProvider.php
+++ b/src/module-elasticsuite-indices/Model/IndexStatusProvider.php
@@ -117,6 +117,11 @@ public function getIndexStatus($indexName, $alias): string
      */
     private function isRebuilding(string $indexName, $indexDate): bool
     {
+        if ($indexDate === false) {
+            // If $indexDate is false, we cannot rebuild.
+            return false;
+        }
+
         if (!empty($this->workingIndexers)) {
             foreach (array_keys($this->workingIndexers) as $indexKey) {
                 if (strpos($indexName, $indexKey) !== false) {