diff --git a/app/delivery/send_to_providers.py b/app/delivery/send_to_providers.py
index cecddd98b..9f0513c85 100644
--- a/app/delivery/send_to_providers.py
+++ b/app/delivery/send_to_providers.py
@@ -186,7 +186,15 @@ def send_email_to_provider(notification):
     personalisation = redis_store.get(f"email-personalisation-{notification.id}")
     if personalisation:
         personalisation = personalisation.decode("utf-8")
-        notification.personalisation = json.loads(personalisation)
+        p = json.loads(personalisation)
+        if os.get("NOTIFY_ENVIRONMENT") == "staging":
+            current_app.logger.info(f"Invite personalization before {p}")
+        p = p.replace("%5B", "")
+        p = p.replace("%5D", "")
+        if os.get("NOTIFY_ENVIRONMENT") == "staging":
+            current_app.logger.info(f"Invite personalization after {p}")
+
+        notification.personalisation = p
 
     service = SerialisedService.from_id(notification.service_id)
     if not service.active: