diff --git a/tcp_tests/templates/ironic_standalone/underlay.yaml b/tcp_tests/templates/ironic_standalone/underlay.yaml
index 6f54227..6a25ced 100644
--- a/tcp_tests/templates/ironic_standalone/underlay.yaml
+++ b/tcp_tests/templates/ironic_standalone/underlay.yaml
@@ -78,7 +78,7 @@
           - name: {{ HOSTNAME_IRONIC }}
             role: ironic_master
             params:
-              vcpu: !os_env SLAVE_NODE_CPU, 2
+              vcpu: !os_env SLAVE_NODE_CPU, 1
               memory: !os_env SLAVE_NODE_MEMORY, 2048
               boot:
                 - hd