diff --git a/server/routers/client/updateClient.ts b/server/routers/client/updateClient.ts
index f60f14a0..80050f6c 100644
--- a/server/routers/client/updateClient.ts
+++ b/server/routers/client/updateClient.ts
@@ -29,7 +29,7 @@ const updateClientSchema = z
     .object({
         name: z.string().min(1).max(255).optional(),
         siteIds: z
-            .array(z.string().transform(Number).pipe(z.number()))
+            .array(z.number().int().positive())
             .optional()
     })
     .strict();
diff --git a/src/app/[orgId]/settings/clients/[clientId]/general/page.tsx b/src/app/[orgId]/settings/clients/[clientId]/general/page.tsx
index 55d7c0d3..c7171c8d 100644
--- a/src/app/[orgId]/settings/clients/[clientId]/general/page.tsx
+++ b/src/app/[orgId]/settings/clients/[clientId]/general/page.tsx
@@ -115,7 +115,7 @@ export default function GeneralPage() {
         try {
             await api.post(`/client/${client?.clientId}`, {
                 name: data.name,
-                siteIds: data.siteIds.map(site => site.id)
+                siteIds: data.siteIds.map(site => parseInt(site.id))
             });
 
             updateClient({ name: data.name });