1 files changed, 12 insertions, 4 deletions

diff --git a/server/middlewares/validators/activitypub/signature.ts b/server/middlewares/validators/activitypub/signature.ts
index 4efe9aafa..be14e92ea 100644
--- a/server/middlewares/validators/activitypub/signature.ts
+++ b/server/middlewares/validators/activitypub/signature.ts
@@ -9,10 +9,18 @@ import { logger } from '../../../helpers/logger'
 import { areValidationErrors } from '../utils'
 
 const signatureValidator = [
-  body('signature.type').custom(isSignatureTypeValid).withMessage('Should have a valid signature type'),
-  body('signature.created').custom(isDateValid).withMessage('Should have a valid signature created date'),
-  body('signature.creator').custom(isSignatureCreatorValid).withMessage('Should have a valid signature creator'),
-  body('signature.signatureValue').custom(isSignatureValueValid).withMessage('Should have a valid signature value'),
+  body('signature.type')
+    .optional()
+    .custom(isSignatureTypeValid).withMessage('Should have a valid signature type'),
+  body('signature.created')
+    .optional()
+    .custom(isDateValid).withMessage('Should have a valid signature created date'),
+  body('signature.creator')
+    .optional()
+    .custom(isSignatureCreatorValid).withMessage('Should have a valid signature creator'),
+  body('signature.signatureValue')
+    .optional()
+    .custom(isSignatureValueValid).withMessage('Should have a valid signature value'),
 
   (req: express.Request, res: express.Response, next: express.NextFunction) => {
     logger.debug('Checking activitypub signature parameter', { parameters: { signature: req.body.signature } })