diff --git a/src/features/helm-charts/child-features/preferences/renderer/adding-of-custom-helm-repository/custom-helm-repo.injectable.ts b/src/features/helm-charts/child-features/preferences/renderer/adding-of-custom-helm-repository/custom-helm-repo.injectable.ts
index 6858991fd5..b4c67a8efa 100644
--- a/src/features/helm-charts/child-features/preferences/renderer/adding-of-custom-helm-repository/custom-helm-repo.injectable.ts
+++ b/src/features/helm-charts/child-features/preferences/renderer/adding-of-custom-helm-repository/custom-helm-repo.injectable.ts
@@ -4,11 +4,12 @@
  */
 import { getInjectable, lifecycleEnum } from "@ogre-tools/injectable";
 import { observable } from "mobx";
+import type { HelmRepo } from "../../../../../../common/helm/helm-repo";
 
 const customHelmRepoInjectable = getInjectable({
   id: "custom-helm-repo",
 
-  instantiate: () => observable({
+  instantiate: () => observable.object<HelmRepo>({
     name: "",
     url: "",
     username: "",
@@ -17,6 +18,7 @@ const customHelmRepoInjectable = getInjectable({
     caFile: "",
     keyFile: "",
     certFile: "",
+    cacheFilePath: "",
   }),
 
   lifecycle: lifecycleEnum.transient,