diff --git a/src/internal/kopia/wrapper.go b/src/internal/kopia/wrapper.go
index 3c6854ece..3963b30f6 100644
--- a/src/internal/kopia/wrapper.go
+++ b/src/internal/kopia/wrapper.go
@@ -129,11 +129,6 @@ func (w *Wrapper) Close(ctx context.Context) error {
 	return nil
 }
 
-type IncrementalBase struct {
-	*snapshot.Manifest
-	SubtreePaths []*path.Builder
-}
-
 // ConsumeBackupCollections takes a set of collections and creates a kopia snapshot
 // with the data that they contain. previousSnapshots is used for incremental
 // backups and should represent the base snapshot from which metadata is sourced