diff --git a/deltachat-ffi/deltachat.h b/deltachat-ffi/deltachat.h
index bb759de4d..1eddf6b66 100644
--- a/deltachat-ffi/deltachat.h
+++ b/deltachat-ffi/deltachat.h
@@ -6560,9 +6560,7 @@ void dc_event_unref(dc_event_t* event);
  * generated by dc_get_securejoin_qr().
  *
  * @param data1 (int) The ID of the contact that wants to join.
- * @param data2 (int) The progress as:
- *     0=Error.
- *     1000=Protocol finished for this contact.
+ * @param data2 (int) The progress, always 1000.
  */
 #define DC_EVENT_SECUREJOIN_INVITER_PROGRESS      2060
 
diff --git a/deltachat-jsonrpc/src/api/types/events.rs b/deltachat-jsonrpc/src/api/types/events.rs
index 1028522c5..8c8808a1f 100644
--- a/deltachat-jsonrpc/src/api/types/events.rs
+++ b/deltachat-jsonrpc/src/api/types/events.rs
@@ -294,8 +294,8 @@ pub enum EventType {
     #[serde(rename_all = "camelCase")]
     ImexFileWritten { path: String },
 
-    /// Progress information of a secure-join handshake from the view of the inviter
-    /// (Alice, the person who shows the QR code).
+    /// Progress event sent when SecureJoin protocol has finished
+    /// from the view of the inviter (Alice, the person who shows the QR code).
     ///
     /// These events are typically sent after a joiner has scanned the QR code
     /// generated by getChatSecurejoinQrCodeSvg().
@@ -309,9 +309,7 @@ pub enum EventType {
         /// as `BasicChat.chatType` ([`crate::api::types::chat::BasicChat::chat_type`]).
         chat_type: u32,
 
-        /// Progress as:
-        /// 0=Error.
-        /// 1000=Protocol finished for this contact.
+        /// Progress, always 1000.
         progress: usize,
     },
 
diff --git a/src/events/payload.rs b/src/events/payload.rs
index 83e8fa923..e920b5e24 100644
--- a/src/events/payload.rs
+++ b/src/events/payload.rs
@@ -276,11 +276,7 @@ pub enum EventType {
         /// The type of the joined chat.
         chat_type: Chattype,
 
-        /// Progress as:
-        /// 300=vg-/vc-request received, typically shown as "bob@addr joins".
-        /// 600=vg-/vc-request-with-auth received and verified, typically shown as "bob@addr verified".
-        /// 800=contact added to chat, shown as "bob@addr securely joined GROUP". Only for the verified-group-protocol.
-        /// 1000=Protocol finished for this contact.
+        /// Progress, always 1000.
         progress: usize,
     },
 
diff --git a/src/securejoin.rs b/src/securejoin.rs
index 2da463e6b..d388ac4cc 100644
--- a/src/securejoin.rs
+++ b/src/securejoin.rs
@@ -16,7 +16,6 @@ use crate::events::EventType;
 use crate::headerdef::HeaderDef;
 use crate::key::{DcKey, Fingerprint, load_self_public_key};
 use crate::log::{error, info, warn};
-use crate::logged_debug_assert;
 use crate::message::{Message, Viewtype};
 use crate::mimeparser::{MimeMessage, SystemMessage};
 use crate::param::Param;
@@ -32,23 +31,15 @@ use qrinvite::QrInvite;
 
 use crate::token::Namespace;
 
-fn inviter_progress(
-    context: &Context,
-    contact_id: ContactId,
-    is_group: bool,
-    progress: usize,
-) -> Result<()> {
-    logged_debug_assert!(
-        context,
-        progress == 0 || progress == 1000,
-        "inviter_progress: contact {contact_id}, progress={progress}, but value is not 0 (error) or 1000 (success)."
-    );
+fn inviter_progress(context: &Context, contact_id: ContactId, is_group: bool) -> Result<()> {
     let chat_type = if is_group {
         Chattype::Group
     } else {
         Chattype::Single
     };
 
+    // No other values are used.
+    let progress = 1000;
     context.emit_event(EventType::SecurejoinInviterProgress {
         contact_id,
         chat_type,
@@ -427,7 +418,7 @@ pub(crate) async fn handle_securejoin_handshake(
                 chat::add_contact_to_chat_ex(context, Nosync, group_chat_id, contact_id, true)
                     .await?;
                 let is_group = true;
-                inviter_progress(context, contact_id, is_group, 1000)?;
+                inviter_progress(context, contact_id, is_group)?;
                 // IMAP-delete the message to avoid handling it by another device and adding the
                 // member twice. Another device will know the member's key from Autocrypt-Gossip.
                 Ok(HandshakeMessage::Done)
@@ -445,7 +436,7 @@ pub(crate) async fn handle_securejoin_handshake(
                     .context("failed sending vc-contact-confirm message")?;
 
                 let is_group = false;
-                inviter_progress(context, contact_id, is_group, 1000)?;
+                inviter_progress(context, contact_id, is_group)?;
                 Ok(HandshakeMessage::Ignore) // "Done" would delete the message and break multi-device (the key from Autocrypt-header is needed)
             }
         }
@@ -568,7 +559,7 @@ pub(crate) async fn observe_securejoin_on_other_device(
         let is_group = mime_message
             .get_header(HeaderDef::ChatGroupMemberAdded)
             .is_some();
-        inviter_progress(context, contact_id, is_group, 1000)?;
+        inviter_progress(context, contact_id, is_group)?;
     }
 
     if step == "vg-request-with-auth" || step == "vc-request-with-auth" {