diff --git a/fints4javaLib/src/main/kotlin/net/dankito/fints/util/IBase64Service.kt b/fints4javaLib/src/main/kotlin/net/dankito/fints/util/IBase64Service.kt
index 93d2f3ba..fe8031cb 100644
--- a/fints4javaLib/src/main/kotlin/net/dankito/fints/util/IBase64Service.kt
+++ b/fints4javaLib/src/main/kotlin/net/dankito/fints/util/IBase64Service.kt
@@ -1,12 +1,13 @@
 package net.dankito.fints.util
 
+import net.dankito.fints.messages.HbciCharset
 import java.nio.charset.Charset
 
 
 interface IBase64Service {
 
     companion object {
-        val DefaultCharset = Charsets.UTF_8
+        val DefaultCharset = HbciCharset.DefaultCharset
     }