diff --git a/devstack/lib/ironic b/devstack/lib/ironic
index a82a88da16..126741c890 100644
--- a/devstack/lib/ironic
+++ b/devstack/lib/ironic
@@ -79,7 +79,7 @@ IRONIC_VM_SSH_PORT=${IRONIC_VM_SSH_PORT:-22}
 IRONIC_VM_SSH_ADDRESS=${IRONIC_VM_SSH_ADDRESS:-$HOST_IP}
 IRONIC_VM_COUNT=${IRONIC_VM_COUNT:-1}
 IRONIC_VM_SPECS_CPU=${IRONIC_VM_SPECS_CPU:-1}
-IRONIC_VM_SPECS_RAM=${IRONIC_VM_SPECS_RAM:-512}
+IRONIC_VM_SPECS_RAM=${IRONIC_VM_SPECS_RAM:-1024}
 IRONIC_VM_SPECS_DISK=${IRONIC_VM_SPECS_DISK:-10}
 IRONIC_VM_EPHEMERAL_DISK=${IRONIC_VM_EPHEMERAL_DISK:-0}
 IRONIC_VM_EMULATOR=${IRONIC_VM_EMULATOR:-/usr/bin/qemu-system-x86_64}