diff --git a/apps/files/lib/Service/ChunkedUploadConfig.php b/apps/files/lib/Service/ChunkedUploadConfig.php
index 29661750f8b..0bf83b649c7 100644
--- a/apps/files/lib/Service/ChunkedUploadConfig.php
+++ b/apps/files/lib/Service/ChunkedUploadConfig.php
@@ -25,6 +25,6 @@ class ChunkedUploadConfig {
 	}
 
 	public static function getMaxParallelCount(): int {
-		return Server::get(IConfig::class)->getSystemValueInt(self::KEY_MAX_PARALLEL_COUNT, 5);
+		return max(1, Server::get(IConfig::class)->getSystemValueInt(self::KEY_MAX_PARALLEL_COUNT, 5));
 	}
 }