diff --git a/schemas/2022-07-01/Microsoft.KeyVault.json b/schemas/2022-07-01/Microsoft.KeyVault.json
index 3bb43138a1..b79099688b 100644
--- a/schemas/2022-07-01/Microsoft.KeyVault.json
+++ b/schemas/2022-07-01/Microsoft.KeyVault.json
@@ -595,7 +595,8 @@
         "exportable": {
           "oneOf": [
             {
-              "type": "boolean"
+              "type": "boolean",
+              "default": false
             },
             {
               "$ref": "https://schema.management.azure.com/schemas/common/definitions.json#/definitions/expression"