diff --git a/lib/pleroma/workers/background_worker.ex b/lib/pleroma/workers/background_worker.ex
index 794417612..7a2210dc1 100644
--- a/lib/pleroma/workers/background_worker.ex
+++ b/lib/pleroma/workers/background_worker.ex
@@ -28,7 +28,7 @@ def perform(%Job{args: %{"op" => "force_password_reset", "user_id" => user_id}})
   def perform(%Job{args: %{"op" => op, "user_id" => user_id, "identifiers" => identifiers}})
       when op in ["blocks_import", "follow_import", "mutes_import"] do
     user = User.get_cached_by_id(user_id)
-    {:ok, User.Import.perform(String.to_atom(op), user, identifiers)}
+    {:ok, User.Import.perform(String.to_existing_atom(op), user, identifiers)}
   end
 
   def perform(%Job{