diff --git a/src/chat.rs b/src/chat.rs
index 7023b03adf..786c27b4ff 100644
--- a/src/chat.rs
+++ b/src/chat.rs
@@ -1768,16 +1768,6 @@ impl Chat {
                 .remove(Param::Unpromoted)
                 .set_i64(Param::GroupNameTimestamp, msg.timestamp_sort);
             self.update_param(context).await?;
-            // TODO: Remove this compat code needed because Core <= v1.143:
-            // - doesn't accept synchronization of QR code tokens for unpromoted groups, so we also
-            //   send them when the group is promoted.
-            // - doesn't sync QR code tokens for unpromoted groups and the group might be created
-            //   before an upgrade.
-            context
-                .sync_qr_code_tokens(Some(self.grpid.as_str()))
-                .await
-                .log_err(context)
-                .ok();
         }
 
         let is_bot = context.get_config_bool(Config::Bot).await?;
@@ -3879,18 +3869,12 @@ pub(crate) async fn add_contact_to_chat_ex(
         );
         return Ok(false);
     }
-
-    let sync_qr_code_tokens;
     if from_handshake && chat.param.get_int(Param::Unpromoted).unwrap_or_default() == 1 {
         chat.param
             .remove(Param::Unpromoted)
             .set_i64(Param::GroupNameTimestamp, smeared_time(context));
         chat.update_param(context).await?;
-        sync_qr_code_tokens = true;
-    } else {
-        sync_qr_code_tokens = false;
     }
-
     if context.is_self_addr(contact.get_addr()).await? {
         // ourself is added using ContactId::SELF, do not add this address explicitly.
         // if SELF is not in the group, members cannot be added at all.
@@ -3939,20 +3923,6 @@ pub(crate) async fn add_contact_to_chat_ex(
         send_msg(context, chat_id, &mut msg).await?;
 
         sync = Nosync;
-        // TODO: Remove this compat code needed because Core <= v1.143:
-        // - doesn't accept synchronization of QR code tokens for unpromoted groups, so we also send
-        //   them when the group is promoted.
-        // - doesn't sync QR code tokens for unpromoted groups and the group might be created before
-        //   an upgrade.
-        if sync_qr_code_tokens
-            && context
-                .sync_qr_code_tokens(Some(chat.grpid.as_str()))
-                .await
-                .log_err(context)
-                .is_ok()
-        {
-            context.scheduler.interrupt_smtp().await;
-        }
     }
     context.emit_event(EventType::ChatModified(chat_id));
     if sync.into() {
diff --git a/src/sync.rs b/src/sync.rs
index 5eb403d102..b0dc32c755 100644
--- a/src/sync.rs
+++ b/src/sync.rs
@@ -789,19 +789,7 @@ mod tests {
 
         let bob = &tcm.bob().await;
         tcm.exec_securejoin_qr(bob, alice, &qr).await;
-        let msg_id = alice.send_sync_msg().await?;
-        // Core <= v1.143 doesn't sync QR code tokens immediately, so current Core does that when a
-        // group is promoted for compatibility (because the group could be created by older Core).
-        // TODO: assert!(msg_id.is_none());
-        assert!(msg_id.is_some());
-        let sent = alice.pop_sent_msg().await;
-        let msg = alice.parse_msg(&sent).await;
-        let mut sync_items = msg.sync_items.unwrap().items;
-        assert_eq!(sync_items.len(), 1);
-        let data = sync_items.pop().unwrap().data;
-        let SyncDataOrUnknown::SyncData(AddQrToken(_)) = data else {
-            unreachable!();
-        };
+        assert!(alice.send_sync_msg().await?.is_none());
 
         // Remove Bob because alice2 doesn't have their key.
         let alice_bob_id = alice.add_or_lookup_contact(bob).await.id;