diff --git a/specification/iothub/resource-manager/Microsoft.Devices/preview/2021-07-01-preview/iothub.json b/specification/iothub/resource-manager/Microsoft.Devices/preview/2021-07-01-preview/iothub.json
index da250424b449..d56a876ff1b7 100644
--- a/specification/iothub/resource-manager/Microsoft.Devices/preview/2021-07-01-preview/iothub.json
+++ b/specification/iothub/resource-manager/Microsoft.Devices/preview/2021-07-01-preview/iothub.json
@@ -2194,8 +2194,7 @@
         },
         "isVerified": {
           "description": "Determines whether certificate has been verified.",
-          "type": "boolean",
-          "readOnly": true
+          "type": "boolean"
         },
         "created": {
           "description": "The certificate's create date and time.",
diff --git a/specification/iothub/resource-manager/Microsoft.Devices/stable/2021-07-01/iothub.json b/specification/iothub/resource-manager/Microsoft.Devices/stable/2021-07-01/iothub.json
index 73f78477971d..0b5b2b175037 100644
--- a/specification/iothub/resource-manager/Microsoft.Devices/stable/2021-07-01/iothub.json
+++ b/specification/iothub/resource-manager/Microsoft.Devices/stable/2021-07-01/iothub.json
@@ -2194,8 +2194,7 @@
         },
         "isVerified": {
           "description": "Determines whether certificate has been verified.",
-          "type": "boolean",
-          "readOnly": true
+          "type": "boolean"
         },
         "created": {
           "description": "The certificate's create date and time.",