diff --git a/apps/settings/lib/Settings/Admin/ArtificialIntelligence.php b/apps/settings/lib/Settings/Admin/ArtificialIntelligence.php
index c606963536715..a7e5276762d11 100644
--- a/apps/settings/lib/Settings/Admin/ArtificialIntelligence.php
+++ b/apps/settings/lib/Settings/Admin/ArtificialIntelligence.php
@@ -143,7 +143,7 @@ public function getForm() {
 			$value = $defaultValue;
 			$json = $this->config->getAppValue('core', $key, '');
 			if ($json !== '') {
-				$value = json_decode($json, true);
+				$value = json_decode($json, true, flags: JSON_THROW_ON_ERROR);
 				switch ($key) {
 					case 'ai.taskprocessing_provider_preferences':
 					case 'ai.taskprocessing_type_preferences':
diff --git a/lib/private/TaskProcessing/Manager.php b/lib/private/TaskProcessing/Manager.php
index e263195d35ea1..8afc62a05d4b6 100644
--- a/lib/private/TaskProcessing/Manager.php
+++ b/lib/private/TaskProcessing/Manager.php
@@ -572,7 +572,7 @@ private function _getTaskTypeSettings(): array {
 		if ($json === '') {
 			return [];
 		}
-		return json_decode($json, true);
+		return json_decode($json, true, flags: JSON_THROW_ON_ERROR);
 	}
 
 	/**