diff --git a/lib/message/image.ts b/lib/message/image.ts
index 8ca42bc4..edc6d113 100644
--- a/lib/message/image.ts
+++ b/lib/message/image.ts
@@ -43,9 +43,9 @@ export function parseImageFileParam(file: string) {
 	let md5: string, size: number, width: number, height: number, ext: string
 	let sp = file.split("-")
 	md5 = sp[0].slice(0, 32)
-	size = Number(sp[0].slice(32)) | 0
-	width = Number(sp[1]) | 0
-	height = Number(sp[2]) | 0
+	size = Number(sp[0].slice(32)) || 0
+	width = Number(sp[1]) || 0
+	height = parseInt(sp[2]) || 0
 	sp = file.split(".")
 	ext = sp[1] || "jpg"
 	return { md5, size, width, height, ext }
diff --git a/lib/message/message.ts b/lib/message/message.ts
index 077b25df..89243725 100644
--- a/lib/message/message.ts
+++ b/lib/message/message.ts
@@ -309,7 +309,7 @@ export class GroupMessage extends Message {
 				this.sender.nickname = this.sender.card = parseFunString(group[4].toBuffer())
 			if (ext?.[4])
 				this.sender.role = ext[4] === 8 ? "owner" : "admin"
-			this.sender.level = ext?.[3] | 0
+			this.sender.level = ext?.[3] || 0
 			this.sender.title = ext?.[7]?.toString() || ""
 
 		}