diff --git a/roles/network/tasks/enable_services.yml b/roles/network/tasks/enable_services.yml
index 59a55ab8a..3cd5d14b5 100644
--- a/roles/network/tasks/enable_services.yml
+++ b/roles/network/tasks/enable_services.yml
@@ -228,6 +228,7 @@
       value: "{{ squid_install }}"
     - option: squid_enabled
       value: "{{ squid_enabled }}"
+  when: squid_installed is defined
 
 - name: Add 'dansguardian' variable values to {{ iiab_ini_file }}
   ini_file:
@@ -240,6 +241,7 @@
       value: "{{ dansguardian_install }}"
     - option: dansguardian_enabled
       value: "{{ dansguardian_enabled }}"
+  when: dansguardian_installed is defined
 
 - name: Add 'wondershaper' variable values to {{ iiab_ini_file }}
   ini_file:
@@ -252,3 +254,4 @@
       value: "{{ wondershaper_install }}"
     - option: wondershaper_enabled
       value: "{{ wondershaper_enabled }}"
+  when: wondershaper is defined