diff --git a/defaults/main.yml b/defaults/main.yml
index adbdd3f..598afa1 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -11,3 +11,4 @@ sshd_gssapi_authentication: 'no'
 sshd_host_keys:
 - '/etc/ssh/ssh_host_ed25519_key'
 sshd_pubkey_authentication:   'yes'
+apt_clean_after_install: false
diff --git a/tasks/os-debian.yml b/tasks/os-debian.yml
index 0c92993..b794330 100644
--- a/tasks/os-debian.yml
+++ b/tasks/os-debian.yml
@@ -7,7 +7,7 @@
   copy:
     dest: /etc/apt/apt.conf.d/99AutomaticClean
     content: |
-      Aptitude::Clean-After-Install "{{if true == (apt_clean_after_install|default(false)) || apt_proxy is defined then 'true' else 'false'}}";
+      Aptitude::Clean-After-Install "{{if true == apt_clean_after_install || apt_proxy is defined then 'true' else 'false'}}";
     owner: root
     group: root
     mode: 0644