diff --git a/src/services/OpenAPIParser.ts b/src/services/OpenAPIParser.ts
index b9883ff9d7..6653699752 100644
--- a/src/services/OpenAPIParser.ts
+++ b/src/services/OpenAPIParser.ts
@@ -58,7 +58,7 @@ export class OpenAPIParser {
     this.spec = spec;
     this.allowMergeRefs = spec.openapi.startsWith('3.1');
 
-    const href = IS_BROWSER ? window.location.href : '';
+    const href = IS_BROWSER ? window.location.href : undefined;
     if (typeof specUrl === 'string') {
       this.specUrl = new URL(specUrl, href).href;
     }
diff --git a/src/services/models/Example.ts b/src/services/models/Example.ts
index 016e5caa18..1eb81847f6 100644
--- a/src/services/models/Example.ts
+++ b/src/services/models/Example.ts
@@ -21,7 +21,7 @@ export class ExampleModel {
     this.summary = example.summary;
     this.description = example.description;
     if (example.externalValue) {
-      this.externalValueUrl = new URL(example.externalValue, parser.specUrl || '').href;
+      this.externalValueUrl = new URL(example.externalValue, parser.specUrl).href;
     }
     parser.exitRef(infoOrRef);