diff --git a/tasks/install/zimbra.yml b/tasks/install/zimbra.yml
index 008e56f..4bc1412 100644
--- a/tasks/install/zimbra.yml
+++ b/tasks/install/zimbra.yml
@@ -31,7 +31,7 @@
     mode: 0644
 
 - name: Installing Zimbra OSE
-  command: ./install.sh -s < /tmp/zcs/installZimbra-keystrokes
+  shell: ./install.sh -s < /tmp/zcs/installZimbra-keystrokes
   args:
     chdir: '/usr/local/src/{{ zmpkg }}/'