diff --git a/internal/checker/checker.go b/internal/checker/checker.go
index c2a900420..8b5676050 100644
--- a/internal/checker/checker.go
+++ b/internal/checker/checker.go
@@ -542,7 +542,7 @@ func checkPack(ctx context.Context, r restic.Repository, id restic.ID, blobs []r
 		// Check if blob is contained in index and position is correct
 		idxHas := false
 		for _, pb := range idx.Lookup(blob.BlobHandle) {
-			if pb.PackID == id && pb.Offset == blob.Offset && pb.Length == blob.Length {
+			if pb.PackID == id && pb.Blob == blob {
 				idxHas = true
 				break
 			}
diff --git a/internal/repository/index.go b/internal/repository/index.go
index fdd57b052..3db19b3b8 100644
--- a/internal/repository/index.go
+++ b/internal/repository/index.go
@@ -543,7 +543,7 @@ func (idx *Index) merge(idx2 *Index) error {
 			m.foreachWithID(e2.id, func(e *indexEntry) {
 				b := idx.toPackedBlob(e, restic.BlobType(typ))
 				b2 := idx2.toPackedBlob(e2, restic.BlobType(typ))
-				if b.Length == b2.Length && b.Offset == b2.Offset && b.PackID == b2.PackID {
+				if b == b2 {
 					found = true
 				}
 			})