diff --git a/config/externalnamenottested.go b/config/externalnamenottested.go
index cc5a51ef56..f95e550b51 100644
--- a/config/externalnamenottested.go
+++ b/config/externalnamenottested.go
@@ -46,8 +46,6 @@ var ExternalNameNotTestedConfigs = map[string]config.ExternalName{
 
 	// cloudformation
 	//
-	// Cloudformation Stacks Instances imported using the StackSet name, target AWS account ID, and target AWS: example,123456789012,us-east-1
-	"aws_cloudformation_stack_set_instance": config.IdentifierFromProvider,
 	// aws_cloudformation_type can be imported with their type version Amazon Resource Name (ARN)
 	"aws_cloudformation_type": config.IdentifierFromProvider,