diff --git a/src/securejoin.rs b/src/securejoin.rs
index 92cfd89986..96b410a6f9 100644
--- a/src/securejoin.rs
+++ b/src/securejoin.rs
@@ -33,6 +33,15 @@ pub(crate) use qrinvite::QrInvite;
 
 use crate::token::Namespace;
 
+/// Only new QR codes cause a verification on Alice's side.
+/// When a QR code is too old, it is assumed that there was no direct QR scan,
+/// and that the QR code was potentially published on a website,
+/// so, Alice doesn't mark Bob as verified.
+// TODO For backwards compatibility reasons, this is still using a rather large value.
+// Set this to a lower value (e.g. 10 minutes)
+// when Delta Chat v2.22.0 is sufficiently rolled out
+const VERIFICATION_TIMEOUT_SECONDS: i64 = 7 * 24 * 3600;
+
 fn inviter_progress(
     context: &Context,
     contact_id: ContactId,
@@ -465,8 +474,8 @@ pub(crate) async fn handle_securejoin_handshake(
             }
             info!(context, "Fingerprint verified via Auth code.",);
 
-            // Mark the contact as verified if auth code is 600 seconds old.
-            if time() < timestamp + 600 {
+            // Mark the contact as verified if auth code is less than VERIFICATION_TIMEOUT_SECONDS seconds old.
+            if time() < timestamp + VERIFICATION_TIMEOUT_SECONDS {
                 mark_contact_id_as_verified(context, contact_id, Some(ContactId::SELF)).await?;
             }
             contact_id.regossip_keys(context).await?;
diff --git a/src/sql/migrations.rs b/src/sql/migrations.rs
index 851fec670d..5b2c88ccaf 100644
--- a/src/sql/migrations.rs
+++ b/src/sql/migrations.rs
@@ -1261,15 +1261,7 @@ CREATE INDEX gossip_timestamp_index ON gossip_timestamp (chat_id, fingerprint);
         .await?;
     }
 
-    inc_and_check(&mut migration_version, 134)?;
-    if dbversion < migration_version {
-        // Reset all indirect verifications.
-        sql.execute_migration(
-            "UPDATE contacts SET verifier=0 WHERE verifier!=1",
-            migration_version,
-        )
-        .await?;
-    }
+    inc_and_check(&mut migration_version, 134)?; // Migration 134 was removed
 
     inc_and_check(&mut migration_version, 135)?;
     if dbversion < migration_version {