diff --git a/src/main/java/club/kid7/bannermaker/configuration/Language.java b/src/main/java/club/kid7/bannermaker/configuration/Language.java
index 8fa0f3b..bb1bd77 100644
--- a/src/main/java/club/kid7/bannermaker/configuration/Language.java
+++ b/src/main/java/club/kid7/bannermaker/configuration/Language.java
@@ -160,7 +160,7 @@ private void checkConfig(Locale checkLocale) {
 
     private static Locale parseLocale(String localeName) {
         //自動
-        if (localeName == null || localeName.equalsIgnoreCase("auto") || localeName.length() == 0) {
+        if (localeName == null || localeName.equalsIgnoreCase("auto") || localeName.isEmpty()) {
             return Locale.getDefault();
         }
         //嘗試直接搜尋
diff --git a/src/main/java/club/kid7/bannermaker/util/IOUtil.java b/src/main/java/club/kid7/bannermaker/util/IOUtil.java
index 59168b7..196348e 100644
--- a/src/main/java/club/kid7/bannermaker/util/IOUtil.java
+++ b/src/main/java/club/kid7/bannermaker/util/IOUtil.java
@@ -39,7 +39,7 @@ static public void saveBanner(Player player, ItemStack banner) {
         for (Pattern pattern : bm.getPatterns()) {
             patternList.add(pattern.getPattern().getIdentifier() + ":" + pattern.getColor());
         }
-        if (patternList.size() > 0) {
+        if (!patternList.isEmpty()) {
             config.set(key + ".patterns", patternList);
         }
         KConfigManager.save(fileName);