diff --git a/libvirt/tests/cfg/cpu/max_vcpus.cfg b/libvirt/tests/cfg/cpu/max_vcpus.cfg
index b8fd70eacb..fddd0fb64a 100644
--- a/libvirt/tests/cfg/cpu/max_vcpus.cfg
+++ b/libvirt/tests/cfg/cpu/max_vcpus.cfg
@@ -50,8 +50,8 @@
                 - no_iommu:
                     only q35
                     check = "no_iommu"
+                    status_error = "no"
                     guest_vcpu = "256"
-                    err_msg = "unsupported configuration: more than 255 vCPUs require extended interrupt mode enabled on the iommu device"
                 - with_iommu:
                     only q35
                     check = "with_iommu"
@@ -60,5 +60,5 @@
                 - ioapic_iommu:
                     only q35
                     check = "ioapic_iommu_ne"
-                    guest_vcpu = "711"
+                    guest_vcpu = "4097"
                     err_msg = "unsupported configuration: Maximum CPUs greater than specified machine type limit|exceeds the maximum cpus supported|CPU topology doesn't match maximum vcpu count"