diff --git a/cmd/signer/main.go b/cmd/signer/main.go
index 68943f1..3c19600 100644
--- a/cmd/signer/main.go
+++ b/cmd/signer/main.go
@@ -156,14 +156,14 @@ func configureRepositories(
 	result := make(map[string]*revoking.X509Revoking)
 
 	for _, name := range caConfig.RootCAs() {
-		result[fmt.Sprintf("root-%s", name)], err = buildX509Revoking(caConfig, name, logger)
+		result[name], err = buildX509Revoking(caConfig, name, logger)
 		if err != nil {
 			return nil, err
 		}
 	}
 
 	for _, name := range caConfig.SubordinateCAs() {
-		result[fmt.Sprintf("sub-%s", name)], err = buildX509Revoking(caConfig, name, logger)
+		result[name], err = buildX509Revoking(caConfig, name, logger)
 		if err != nil {
 			return nil, err
 		}