diff --git a/app/src/main/java/jp/juggler/subwaytooter/api/entity/TootAccount.kt b/app/src/main/java/jp/juggler/subwaytooter/api/entity/TootAccount.kt
index 212aadab..f047bc5c 100644
--- a/app/src/main/java/jp/juggler/subwaytooter/api/entity/TootAccount.kt
+++ b/app/src/main/java/jp/juggler/subwaytooter/api/entity/TootAccount.kt
@@ -29,7 +29,7 @@ open class TootAccount(parser : TootParser, src : JSONObject) {
 		
 		// host, user ,(instance)
 		internal val reAccountUrl : Pattern =
-			Pattern.compile("\\Ahttps://([A-Za-z0-9._-]+)/@([A-Za-z0-9_]+(?:@[A-Za-z0-9._-]+)?)(?:\\z|[?#])")
+			Pattern.compile("\\Ahttps://([A-Za-z0-9._-]+)/@([A-Za-z0-9_]+)(?:@([A-Za-z0-9._-]+))?(?:\\z|[?#])")
 		
 		fun getAcctFromUrl(url : String) : String? {
 			val m = reAccountUrl.matcher(url)