diff --git a/beetsplug/musicbrainz.py b/beetsplug/musicbrainz.py
index 651112ba1..0120f614e 100644
--- a/beetsplug/musicbrainz.py
+++ b/beetsplug/musicbrainz.py
@@ -235,6 +235,7 @@ def _merge_pseudo_and_actual_album(
             "style",
             "genres",
         ]
+        if actual[k] is not None
     }
     merged.update(from_actual)
     return merged