diff --git a/inc/Data/ThumbGenerationResult.php b/inc/Data/ThumbGenerationResult.php
index 066b34bf..95248ea0 100644
--- a/inc/Data/ThumbGenerationResult.php
+++ b/inc/Data/ThumbGenerationResult.php
@@ -5,21 +5,17 @@ namespace Vichan\Data;
 class ThumbGenerationResult {
 	public string $thumb_file_path;
 	public string $thumb_mime;
-	public bool $is_thumb_file_temporary;
 	public int $width;
 	public int $height;
 
-
 	public function __construct(
 		string $thumb_file_path,
 		string $thumb_mime,
-		bool $is_thumb_file_temporary,
 		int $width,
 		int $height
 	) {
 		$this->thumb_file_path = $thumb_file_path;
 		$this->thumb_mime = $thumb_mime;
-		$this->is_thumb_file_temporary = $is_thumb_file_temporary;
 		$this->width = $width;
 		$this->height = $height;
 	}