diff --git a/NEWS b/NEWS
index c8742f395..7f9d25bc3 100644
--- a/NEWS
+++ b/NEWS
@@ -1,4 +1,6 @@
 ver 0.21.21 (not yet released)
+* configuration
+  - fix bug in "metadata_to_use" setting
 * archive
   - iso9660: skip empty file names to work around libcdio bug
 * decoder
diff --git a/src/tag/Mask.hxx b/src/tag/Mask.hxx
index 4b6126bc5..e7de5dd54 100644
--- a/src/tag/Mask.hxx
+++ b/src/tag/Mask.hxx
@@ -89,7 +89,7 @@ public:
 	}
 
 	void Unset(TagType tag) {
-		*this |= ~TagMask(tag);
+		*this &= ~TagMask(tag);
 	}
 };