diff --git a/libdino/src/service/avatar_storage.vala b/libdino/src/service/avatar_storage.vala
index f40414d1..b924ca27 100644
--- a/libdino/src/service/avatar_storage.vala
+++ b/libdino/src/service/avatar_storage.vala
@@ -12,12 +12,12 @@ public class AvatarStorage : Xep.PixbufStorage, Object {
         DirUtils.create_with_parents(folder, 0700);
     }
 
-    public void store(string id, uint8[] data) {
+    public void store(string id, Bytes data) {
         File file = File.new_for_path(Path.build_filename(folder, id));
         try {
             if (file.query_exists()) file.delete(); //TODO y?
             DataOutputStream fos = new DataOutputStream(file.create(FileCreateFlags.REPLACE_DESTINATION));
-            fos.write_async.begin(data);
+            fos.write_bytes_async.begin(data);
         } catch (Error e) {
             // Ignore: we failed in storing, so we refuse to display later...
         }
diff --git a/xmpp-vala/src/module/xep/0054_vcard/module.vala b/xmpp-vala/src/module/xep/0054_vcard/module.vala
index 96e412ac..2cebea2f 100644
--- a/xmpp-vala/src/module/xep/0054_vcard/module.vala
+++ b/xmpp-vala/src/module/xep/0054_vcard/module.vala
@@ -55,8 +55,8 @@ public class Module : XmppStreamModule {
         if (iq.is_error()) return;
         string? res = iq.stanza.get_deep_string_content(@"$NS_URI:vCard", "PHOTO", "BINVAL");
         if (res == null) return;
-        uint8[] content = Base64.decode(res);
-        string sha1 = Checksum.compute_for_data(ChecksumType.SHA1, content);
+        Bytes content = new Bytes.take(Base64.decode(res));
+        string sha1 = Checksum.compute_for_bytes(ChecksumType.SHA1, content);
         storage.store(sha1, content);
         stream.get_module(IDENTITY).received_avatar(stream, iq.from, sha1);
     }
diff --git a/xmpp-vala/src/module/xep/0084_user_avatars.vala b/xmpp-vala/src/module/xep/0084_user_avatars.vala
index 8fb9f58d..ed35dc44 100644
--- a/xmpp-vala/src/module/xep/0084_user_avatars.vala
+++ b/xmpp-vala/src/module/xep/0084_user_avatars.vala
@@ -56,8 +56,8 @@ namespace Xmpp.Xep.UserAvatars {
             if (node == null || id == null) {
                 return;
             }
-            uint8[] image = Base64.decode(node.get_string_content());
-            string sha1 = Checksum.compute_for_data(ChecksumType.SHA1, image);
+            Bytes image = new Bytes.take(Base64.decode(node.get_string_content()));
+            string sha1 = Checksum.compute_for_bytes(ChecksumType.SHA1, image);
             if (sha1 != id) {
                 warning("sha sum did not match for avatar from "+jid.to_string()+" expected="+id+", actual="+sha1);
                 return;
diff --git a/xmpp-vala/src/module/xep/pixbuf_storage.vala b/xmpp-vala/src/module/xep/pixbuf_storage.vala
index 0caf4924..cdc227ea 100644
--- a/xmpp-vala/src/module/xep/pixbuf_storage.vala
+++ b/xmpp-vala/src/module/xep/pixbuf_storage.vala
@@ -2,8 +2,8 @@ using Gdk;
 
 namespace Xmpp.Xep {
 public interface PixbufStorage : Object {
-    public abstract void store(string id, uint8[] data);
+    public abstract void store(string id, Bytes data);
     public abstract bool has_image(string id);
     public abstract Pixbuf? get_image(string id);
 }
-}
\ No newline at end of file
+}