diff --git a/tasks/setup-Debian.yml b/tasks/setup-Debian.yml
index 0535744..af7bb5d 100644
--- a/tasks/setup-Debian.yml
+++ b/tasks/setup-Debian.yml
@@ -20,7 +20,7 @@
 
 - name: Update apt cache if repository just added.
   apt: update_cache=yes
-  when: logstash_installed.stat.exists == false
+  when: not logstash_installed.stat.exists
 
 - name: Install Logstash.
   apt: