diff --git a/beetsplug/lastgenre/__init__.py b/beetsplug/lastgenre/__init__.py
index 85539109b..ec27456f9 100644
--- a/beetsplug/lastgenre/__init__.py
+++ b/beetsplug/lastgenre/__init__.py
@@ -434,7 +434,7 @@ class LastGenrePlugin(plugins.BeetsPlugin):
             return fallback, "fallback"
 
         # No fallback configured.
-        return None, None
+        return None, "fallback unconfigured"
 
     # Beets plugin hooks and CLI.