diff --git a/src/docs/module.doc.yml b/src/docs/module.doc.yml
index f61e645..419be68 100644
--- a/src/docs/module.doc.yml
+++ b/src/docs/module.doc.yml
@@ -241,10 +241,13 @@ paths:
                                 description: Metadata for the hivemind module on Notion.
                               - type: object
                                 properties:
-                                  pageIds:
+                                  namespaces:
                                     type: array
                                     items:
-                                      type: string
+                                      type: number
+                                    default: [0]
+                                  activated:
+                                    type: boolean
                                 description: Metadata for the hivemind module on MediaWiki.
                               - type: object
                                 description: Metadata for the hivemind module on website.
diff --git a/src/docs/platform.doc.yml b/src/docs/platform.doc.yml
index 456d0a1..249c4dc 100644
--- a/src/docs/platform.doc.yml
+++ b/src/docs/platform.doc.yml
@@ -165,16 +165,17 @@ paths:
                                   type: string
                       description: Metadata for Notion.
                     - type: object
-                      required: [baseURL, path, namespaces]
+                      required: [baseURL, path]
                       properties:
                         baseURL:
                           type: string
                         path:
                           type: string
                         namespaces:
-                          type: array 
+                          type: array
                           items:
                             type: number
+                          default: [0]
                       description: Metadata for MediaWiki.
                     - type: object
                       required: [id, period, analyzerStartedAt, resources]
diff --git a/src/validations/module.validation.ts b/src/validations/module.validation.ts
index f5d4f3d..8fc3539 100644
--- a/src/validations/module.validation.ts
+++ b/src/validations/module.validation.ts
@@ -79,6 +79,7 @@ const hivemindNotionMetadata = () => {
 
 const hivemindMediaWikiMetadata = () => {
   return Joi.object().keys({
+    namespaces: Joi.array().items(Joi.number()).default([0]),
     activated: Joi.boolean(),
   });
 };
diff --git a/src/validations/platform.validation.ts b/src/validations/platform.validation.ts
index cb171ce..d1402be 100644
--- a/src/validations/platform.validation.ts
+++ b/src/validations/platform.validation.ts
@@ -39,7 +39,7 @@ const mediaWikiUpdateMetadata = () => {
   return Joi.object().keys({
     baseURL: Joi.string().required(),
     path: Joi.string().required(),
-    namespaces: Joi.array().items(Joi.number()).required(),
+    namespaces: Joi.array().items(Joi.number()).default([0]),
   });
 };
 
@@ -94,7 +94,7 @@ const mediaWikiMetadata = () => {
   return Joi.object().keys({
     baseURL: Joi.string().required(),
     path: Joi.string().required(),
-    namespaces: Joi.array().items(Joi.number()).required(),
+    namespaces: Joi.array().items(Joi.number()).default([0]),
   });
 };