diff --git a/software/cm/ansible/src/main/java/org/apache/brooklyn/entity/cm/ansible/AnsiblePlaybookTasks.java b/software/cm/ansible/src/main/java/org/apache/brooklyn/entity/cm/ansible/AnsiblePlaybookTasks.java
index a574f35..fffbcea 100644
--- a/software/cm/ansible/src/main/java/org/apache/brooklyn/entity/cm/ansible/AnsiblePlaybookTasks.java
+++ b/software/cm/ansible/src/main/java/org/apache/brooklyn/entity/cm/ansible/AnsiblePlaybookTasks.java
@@ -71,7 +71,7 @@
     public static TaskFactory<?> runAnsible(final String dir, Object extraVars, String playbookName) {
         String cmd = sudo(String.format("ansible-playbook "
             + optionalExtraVarsParameter(extraVars)
-            + " -s %s.yaml", playbookName));
+            + " -b %s.yaml", playbookName));
 
         if (LOG.isDebugEnabled()) {
             LOG.debug("Ansible command: {}", cmd);