diff --git a/docs/resources/subaccount_security_settings.md b/docs/resources/subaccount_security_settings.md
index e9d70c49..0171d36f 100644
--- a/docs/resources/subaccount_security_settings.md
+++ b/docs/resources/subaccount_security_settings.md
@@ -36,7 +36,7 @@ resource "btp_subaccount_security_settings" "sec_setting" {
 
   custom_email_domains                     = ["yourdomain.test"]
 
-  iframe_domains                           = ["https://yourdomain.test"]
+  iframe_domains                           = "https://yourdomain.test"
 }
 ```
 
diff --git a/examples/resources/btp_subaccount_security_settings/resource.tf b/examples/resources/btp_subaccount_security_settings/resource.tf
index 0e5655e2..b7a53476 100644
--- a/examples/resources/btp_subaccount_security_settings/resource.tf
+++ b/examples/resources/btp_subaccount_security_settings/resource.tf
@@ -10,5 +10,5 @@ resource "btp_subaccount_security_settings" "sec_setting" {
 
   custom_email_domains                     = ["yourdomain.test"]
 
-  iframe_domains                           = ["https://yourdomain.test"]
+  iframe_domains                           = "https://yourdomain.test"
 }