diff --git a/lib/modules/manager/helmfile/extract.ts b/lib/modules/manager/helmfile/extract.ts
index dc9926b5b8deb6..ac38b1f2cfe887 100644
--- a/lib/modules/manager/helmfile/extract.ts
+++ b/lib/modules/manager/helmfile/extract.ts
@@ -118,7 +118,7 @@ export async function extractPackageFile(
 
       if (isOCIRegistry(dep.chart)) {
         res.datasource = DockerDatasource.id;
-        res.packageName = repoName + '/' + depName;
+        res.packageName = urlJoin(repoName, depName);
       } else if (registryData[repoName]?.oci) {
         res.datasource = DockerDatasource.id;
         const alias = registryData[repoName]?.url;