diff --git a/lib/validate.js b/lib/validate.js
index 86b03bded..ffdcd759e 100644
--- a/lib/validate.js
+++ b/lib/validate.js
@@ -478,7 +478,7 @@ export const bioSchema = object({
 
 export const inviteSchema = object({
   gift: intValidator.positive('must be greater than 0').required('required'),
-  limit: intValidator.positive('must be positive'),
+  limit: intValidator.positive('must be positive').nullable(),
   description: string().trim().max(40, 'must be at most 40 characters'),
   id: string().matches(/^[\w-_]+$/, 'only letters, numbers, underscores, and hyphens').min(8, 'must be at least 8 characters').max(32, 'must be at most 32 characters')
 })
diff --git a/pages/invites/index.js b/pages/invites/index.js
index 7692c9d2e..e5020a809 100644
--- a/pages/invites/index.js
+++ b/pages/invites/index.js
@@ -57,7 +57,7 @@ function InviteForm () {
           variables: {
             id: id || undefined,
             gift: Number(gift),
-            limit: limit ? Number(limit) : limit,
+            limit: limit ? Number(limit) : null,
             description: description || undefined
           }
         })