diff --git a/src/main/java/org/jcnc/jnotepad/tool/EncodingDetector.java b/src/main/java/org/jcnc/jnotepad/tool/EncodingDetector.java
index ead291a..dc0fac6 100644
--- a/src/main/java/org/jcnc/jnotepad/tool/EncodingDetector.java
+++ b/src/main/java/org/jcnc/jnotepad/tool/EncodingDetector.java
@@ -60,7 +60,7 @@ public class EncodingDetector {
     public static Charset detectEncodingCharset(File file) {
         String charset = detectEncoding(file);
         if (charset.equals(UNKNOWN)) {
-            return StandardCharsets.UTF_8;
+            return Charset.defaultCharset();
         }
         return Charset.forName(charset);
     }