diff --git a/src/jniutils.cc b/src/jniutils.cc
index da9c9a7..149378b 100644
--- a/src/jniutils.cc
+++ b/src/jniutils.cc
@@ -455,6 +455,8 @@ namespace pEp {
             memcpy((char *)_b, b->value, b->size);
             env->ReleaseByteArrayElements(_data, _b, 0);
 
+            env->SetObjectField(obj, fieldID, reinterpret_cast<jobject>(_data));
+
             _setStringField(env, classname, obj, "mime_type", b->mime_type);
             _setStringField(env, classname, obj, "filename", b->filename);
 
diff --git a/test/Testing.java b/test/Testing.java
index 228c24b..dd8547f 100644
--- a/test/Testing.java
+++ b/test/Testing.java
@@ -57,7 +57,7 @@ class Testing {
 
         System.out.println(enc.getLongmsg());
         Vector<Blob> attachments = enc.getAttachments();
-        System.out.println(attachments.get(1).data);
+        System.out.println(e.toUTF16(attachments.get(1).data));
     }
 }