diff --git a/src/services/swarm/host-storage.ts b/src/services/swarm/host-storage.ts
index 3d015877b2..23e996fe80 100644
--- a/src/services/swarm/host-storage.ts
+++ b/src/services/swarm/host-storage.ts
@@ -68,8 +68,8 @@ export const hostStorageSchema = z.object({
   collected_at: z.number().int(),
   cached: z.boolean(),
   filesystems: z.array(contractFilesystemSchema).transform(capArray),
-  docker_root_dir: cappedString,
-  docker_root_filesystem: cappedString,
+  docker_root_dir: z.nullable(cappedString),
+  docker_root_filesystem: z.nullable(cappedString),
   volumes: z.array(contractVolumeSchema).transform(capArray),
   neo4j: z.nullable(contractNeo4jSchema),
   errors: z.array(contractErrorSchema).transform(capArray),
@@ -268,8 +268,8 @@ export function parseHostStorage(response: SwarmCmdResponse): HostStorageReading
     collectedAt: contract.collected_at,
     cached: contract.cached,
     filesystems,
-    dockerRootDir: contract.docker_root_dir,
-    dockerRootFilesystem: contract.docker_root_filesystem,
+    dockerRootDir: contract.docker_root_dir ?? "",
+    dockerRootFilesystem: contract.docker_root_filesystem ?? "",
     governingFilesystem,
     volumes,
     neo4j,