diff --git a/src/Ledger/AssetAmount.php b/src/Ledger/AssetAmount.php
index 76ba2a8a..cc477333 100644
--- a/src/Ledger/AssetAmount.php
+++ b/src/Ledger/AssetAmount.php
@@ -40,8 +40,8 @@ final class AssetAmount {
 	/**
 	 * 佣金池与余额同为两位小数、同一 minor 口径，仅资产标签不同。
 	 */
-	public static function commission(string $decimal): self {
-		return new self(AssetType::COMMISSION, self::balance($decimal)->minor());
+	public static function commission_from_minor(int $minor): self {
+		return self::from_minor(AssetType::COMMISSION, $minor);
 	}
 
 	public static function decimal_from_minor(int $minor): string {