diff --git a/frontend/src/API/releases.ts b/frontend/src/API/releases.ts
index 4e421d0..4005355 100644
--- a/frontend/src/API/releases.ts
+++ b/frontend/src/API/releases.ts
@@ -65,15 +65,14 @@ export function useGetReleaseManifest({
 }: {
   namespace: string;
   chartName: string;
-  options?: UseQueryOptions<ReleaseManifest[]>;
+  options?: UseQueryOptions<string>;
 }) {
-  return useQuery<ReleaseManifest[]>({
+  return useQuery<string>({
     queryKey: ["manifest", namespace, chartName],
     queryFn: () =>
-      apiService.fetchWithSafeDefaults<ReleaseManifest[]>({
-        url: `/api/helm/releases/${namespace}/${chartName}/manifests`,
-        fallback: [],
-      }),
+      apiService.fetchWithDefaults<string>(
+        `/api/helm/releases/${namespace}/${chartName}/manifests`
+      ),
     ...(options ?? {}),
   });
 }
diff --git a/frontend/src/components/modal/InstallChartModal/InstallReleaseChartModal.tsx b/frontend/src/components/modal/InstallChartModal/InstallReleaseChartModal.tsx
index 213592a..8c420c0 100644
--- a/frontend/src/components/modal/InstallChartModal/InstallReleaseChartModal.tsx
+++ b/frontend/src/components/modal/InstallChartModal/InstallReleaseChartModal.tsx
@@ -143,7 +143,7 @@ export const InstallReleaseChartModal = ({
   } = useDiffData({
     selectedRepo,
     versionsError: versionsError as unknown as string, // TODO fix it
-    currentVerManifest: currentVerManifest as unknown as string, // TODO fix it
+    currentVerManifest: currentVerManifest ?? "",
     selectedVerData,
     chart: chartAddress,
   });