diff --git a/docker/docker_image_dest.go b/docker/docker_image_dest.go
index 782a048cec..4efd32e1c8 100644
--- a/docker/docker_image_dest.go
+++ b/docker/docker_image_dest.go
@@ -71,10 +71,10 @@ func (d *dockerImageDestination) SupportsSignatures(ctx context.Context) error {
 		return err
 	}
 	switch {
-	case d.c.signatureBase != nil:
-		return nil
 	case d.c.supportsSignatures:
 		return nil
+	case d.c.signatureBase != nil:
+		return nil
 	default:
 		return errors.Errorf("X-Registry-Supports-Signatures extension not supported, and lookaside is not configured")
 	}
@@ -276,10 +276,10 @@ func (d *dockerImageDestination) PutSignatures(ctx context.Context, signatures [
 		return err
 	}
 	switch {
-	case d.c.signatureBase != nil:
-		return d.putSignaturesToLookaside(signatures)
 	case d.c.supportsSignatures:
 		return d.putSignaturesToAPIExtension(ctx, signatures)
+	case d.c.signatureBase != nil:
+		return d.putSignaturesToLookaside(signatures)
 	default:
 		return errors.Errorf("X-Registry-Supports-Signatures extension not supported, and lookaside is not configured")
 	}
diff --git a/docker/docker_image_src.go b/docker/docker_image_src.go
index 98f6067e1e..89fbd62563 100644
--- a/docker/docker_image_src.go
+++ b/docker/docker_image_src.go
@@ -189,10 +189,10 @@ func (s *dockerImageSource) GetSignatures(ctx context.Context, instanceDigest *d
 		return nil, err
 	}
 	switch {
-	case s.c.signatureBase != nil:
-		return s.getSignaturesFromLookaside(ctx, instanceDigest)
 	case s.c.supportsSignatures:
 		return s.getSignaturesFromAPIExtension(ctx, instanceDigest)
+	case s.c.signatureBase != nil:
+		return s.getSignaturesFromLookaside(ctx, instanceDigest)
 	default:
 		return [][]byte{}, nil
 	}