diff --git a/apps/server/src/api/client/routes/workspaces/users/user-create.ts b/apps/server/src/api/client/routes/workspaces/users/user-create.ts
index c88d9e80..fbb3a94f 100644
--- a/apps/server/src/api/client/routes/workspaces/users/user-create.ts
+++ b/apps/server/src/api/client/routes/workspaces/users/user-create.ts
@@ -95,8 +95,8 @@ export const userCreateRoute: FastifyPluginCallbackZod = (
             name: account.name,
             email: account.email,
             avatar: account.avatar,
-            storage_limit: config.user.storageLimit.toString(),
-            max_file_size: config.user.maxFileSize.toString(),
+            storage_limit: config.user.storageLimit,
+            max_file_size: config.user.maxFileSize,
             created_at: new Date(),
             created_by: request.account.id,
             status: UserStatus.Active,
diff --git a/apps/server/src/lib/config/smtp.ts b/apps/server/src/lib/config/smtp.ts
index 52faa1eb..94cb92cf 100644
--- a/apps/server/src/lib/config/smtp.ts
+++ b/apps/server/src/lib/config/smtp.ts
@@ -7,7 +7,7 @@ export const smtpConfigSchema = z.discriminatedUnion('enabled', [
       required_error: 'SMTP_HOST is required when SMTP is enabled',
     }),
     port: z.coerce.number().default(587),
-    secure: z.preprocess((val) => val === 'true', z.boolean().default(false)),
+    secure: z.boolean().default(false),
     user: z.string({
       required_error: 'SMTP_USER is required when SMTP is enabled',
     }),
diff --git a/apps/server/src/lib/config/user.ts b/apps/server/src/lib/config/user.ts
index eaf6c9bf..ffd4f602 100644
--- a/apps/server/src/lib/config/user.ts
+++ b/apps/server/src/lib/config/user.ts
@@ -1,14 +1,8 @@
 import { z } from 'zod';
 
 export const userConfigSchema = z.object({
-  storageLimit: z.preprocess(
-    (val) => val && BigInt(val as string),
-    z.bigint().default(10737418240n)
-  ),
-  maxFileSize: z.preprocess(
-    (val) => val && BigInt(val as string),
-    z.bigint().default(104857600n)
-  ),
+  storageLimit: z.string().default('10737418240'),
+  maxFileSize: z.string().default('104857600'),
 });
 
 export type UserConfig = z.infer<typeof userConfigSchema>;
diff --git a/apps/server/src/lib/workspaces.ts b/apps/server/src/lib/workspaces.ts
index 90c7c5f1..60174009 100644
--- a/apps/server/src/lib/workspaces.ts
+++ b/apps/server/src/lib/workspaces.ts
@@ -55,8 +55,8 @@ export const createWorkspace = async (
       name: account.name,
       email: account.email,
       avatar: account.avatar,
-      storage_limit: config.user.storageLimit.toString(),
-      max_file_size: config.user.maxFileSize.toString(),
+      storage_limit: config.user.storageLimit,
+      max_file_size: config.user.maxFileSize,
       created_at: date,
       created_by: account.id,
       status: UserStatus.Active,