diff --git a/vmm/src/api/openapi/cloud-hypervisor.yaml b/vmm/src/api/openapi/cloud-hypervisor.yaml
index e8b72f748..5ed7e9d22 100644
--- a/vmm/src/api/openapi/cloud-hypervisor.yaml
+++ b/vmm/src/api/openapi/cloud-hypervisor.yaml
@@ -781,7 +781,7 @@ components:
           items:
             type: integer
             format: int16
-        iommu_address_width:
+        iommu_address_width_bits:
           type: integer
           format: uint8
         serial_number: