diff --git a/app/jobs/process_submitter_completion_job.rb b/app/jobs/process_submitter_completion_job.rb
index 897ff350..50375483 100644
--- a/app/jobs/process_submitter_completion_job.rb
+++ b/app/jobs/process_submitter_completion_job.rb
@@ -143,7 +143,7 @@ class ProcessSubmitterCompletionJob
   end
 
   def enqueue_bcc_completed_emails(submitter, user, is_sent_to_user)
-    bcc_addresses = build_bcc_addresses(submitter.submission)
+    bcc_addresses = build_bcc_addresses(submitter.submission).uniq
 
     raise TooManyBcc, submitter.account_id if Docuseal.multitenant? && bcc_addresses.size > BCC_LIMIT