diff --git a/core/modules/update/config/schema/update.schema.yml b/core/modules/update/config/schema/update.schema.yml
index bde0066..c06f43d 100644
--- a/core/modules/update/config/schema/update.schema.yml
+++ b/core/modules/update/config/schema/update.schema.yml
@@ -33,10 +33,10 @@ update.settings:
       mapping:
         emails:
           type: sequence
-          label: 'E-mail addresses to nofity when updates are available'
+          label: 'E-mail addresses to notify when updates are available'
           sequence:
-            - type: string
+            - type: email
               label: 'E-mail'
         threshold:
-          type: integer
+          type: string
           label: 'E-mail notification threshold'