diff --git a/corres2math/settings.py b/corres2math/settings.py
index fbcb0be..ab0b9eb 100644
--- a/corres2math/settings.py
+++ b/corres2math/settings.py
@@ -189,6 +189,8 @@ HAYSTACK_CONNECTIONS = {
     }
 }
 
+HAYSTACK_SIGNAL_PROCESSOR = 'haystack.signals.RealtimeSignalProcessor'
+
 _db_type = os.getenv('DJANGO_DB_TYPE', 'sqlite').lower()
 
 if _db_type == 'mysql' or _db_type.startswith('postgres') or _db_type == 'psql':