diff --git a/copy/copy.go b/copy/copy.go
index 5aed39c951..41e88e926f 100644
--- a/copy/copy.go
+++ b/copy/copy.go
@@ -402,7 +402,7 @@ func (c *copier) copyMultipleImages(ctx context.Context, policyContext *signatur
 		sigs = [][]byte{}
 	} else {
 		c.Printf("Getting image list signatures\n")
-		s, err := c.rawSource.GetSignatures(ctx, nil)
+		s, err := unparsedToplevel.Signatures(ctx)
 		if err != nil {
 			return nil, errors.Wrap(err, "reading signatures")
 		}