diff --git a/api/http/handler/stacks/stack_delete.go b/api/http/handler/stacks/stack_delete.go
index 02c07a865..69139731d 100644
--- a/api/http/handler/stacks/stack_delete.go
+++ b/api/http/handler/stacks/stack_delete.go
@@ -29,7 +29,7 @@ import (
 // @security jwt
 // @param id path int true "Stack identifier"
 // @param external query boolean false "Set to true to delete an external stack. Only external Swarm stacks are supported"
-// @param endpointId query int false "Environment(Endpoint) identifier used to remove an external stack (required when external is set to true)"
+// @param endpointId query int true "Environment(Endpoint) identifier used to remove an external stack (required when external is set to true)"
 // @success 204 "Success"
 // @failure 400 "Invalid request"
 // @failure 403 "Permission denied"