diff --git a/lib/workers/repository/update/pr/changelog/github/source.ts b/lib/workers/repository/update/pr/changelog/github/source.ts
index af62ea1e2b69f2..49eb858f99532b 100644
--- a/lib/workers/repository/update/pr/changelog/github/source.ts
+++ b/lib/workers/repository/update/pr/changelog/github/source.ts
@@ -42,7 +42,7 @@ export class GitHubChangeLogSource extends ChangeLogSource {
   } {
     const sourceUrl = config.sourceUrl!;
     const parsedUrl = URL.parse(sourceUrl);
-    const host = parsedUrl.host!;
+    const host = parsedUrl.host;
     const manager = config.manager;
     const packageName = config.packageName;
 
@@ -54,7 +54,7 @@ export class GitHubChangeLogSource extends ChangeLogSource {
       url,
     });
     // istanbul ignore if
-    if (!token) {
+    if (host && !token) {
       if (host.endsWith('.github.com') || host === 'github.com') {
         if (!GlobalConfig.get('githubTokenWarn')) {
           logger.debug(