diff --git a/lib/config/configTypes.ts b/lib/config/configTypes.ts
index 19f0c74..662c918 100644
--- a/lib/config/configTypes.ts
+++ b/lib/config/configTypes.ts
@@ -218,7 +218,7 @@ export type RandomString = {
   len: number
 }
 // sometimes the type checker needs just a little bit of help
-function isValueSpecListOf<S extends ListValueSpecType>(
+export function isValueSpecListOf<S extends ListValueSpecType>(
   t: ValueSpec,
   s: S,
 ): t is ValueSpecListOf<S> & { spec: ListValueSpecOf<S> } {
diff --git a/lib/mainFn/NetworkInterfaceBuilder.ts b/lib/mainFn/NetworkInterfaceBuilder.ts
index 7425d01..1d8d475 100644
--- a/lib/mainFn/NetworkInterfaceBuilder.ts
+++ b/lib/mainFn/NetworkInterfaceBuilder.ts
@@ -21,7 +21,7 @@ export class NetworkInterfaceBuilder {
       id: string
       description: string
       ui: boolean
-      basic: null | { username: string }
+      username: null | string
       path: string
       search: Record<string, string>
     },
@@ -36,10 +36,10 @@ export class NetworkInterfaceBuilder {
    * @returns
    */
   async export(origins: Iterable<Origin>) {
-    const { name, description, id, ui, basic, path, search } = this.options
+    const { name, description, id, ui, username, path, search } = this.options
 
     const addresses = Array.from(origins).map((o) =>
-      o.build({ basic, path, search }),
+      o.build({ username, path, search }),
     )
 
     await this.options.effects.exportNetworkInterface({
diff --git a/lib/mainFn/Origin.ts b/lib/mainFn/Origin.ts
index 6a771b8..5bb0daa 100644
--- a/lib/mainFn/Origin.ts
+++ b/lib/mainFn/Origin.ts
@@ -1,9 +1,9 @@
 export class Origin {
   constructor(readonly protocol: string | null, readonly host: string) {}
 
-  build({ basic, path, search }: BuildOptions) {
+  build({ username, path, search }: BuildOptions) {
     // prettier-ignore
-    const urlAuth = !!(basic) ? `${basic.username}@` :
+    const urlAuth = !!(username) ? `${username}@` :
             '';
     const protocolSection = this.protocol != null ? `${this.protocol}://` : ""
 
@@ -20,7 +20,7 @@ export class Origin {
 }
 
 type BuildOptions = {
-  basic: { username: string } | null
+  username: string | null
   path: string
   search: Record<string, string>
 }
diff --git a/lib/test/configTypes.test.ts b/lib/test/configTypes.test.ts
index a50ec6c..7e3ff5c 100644
--- a/lib/test/configTypes.test.ts
+++ b/lib/test/configTypes.test.ts
@@ -1,4 +1,8 @@
-import { ListValueSpecOf, isValueSpecListOf } from "../config/configTypes"
+import {
+  ListValueSpecOf,
+  ValueSpec,
+  isValueSpecListOf,
+} from "../config/configTypes"
 import { Config } from "../config/builder/config"
 import { List } from "../config/builder/list"
 import { Value } from "../config/builder/value"