diff --git a/roles/foreman_installer/defaults/main.yml b/roles/foreman_installer/defaults/main.yml
index 6597de56f..c6c43c345 100644
--- a/roles/foreman_installer/defaults/main.yml
+++ b/roles/foreman_installer/defaults/main.yml
@@ -7,7 +7,7 @@ foreman_installer_scenario: foreman
 foreman_installer_scenario_flag: '{{ "--scenario" if foreman_installer_scenario else "" }}'
 foreman_installer_upgrade: False
 foreman_installer_command: foreman-installer
-foreman_installer_custom_hiera:
+foreman_installer_custom_hiera: ""
 foreman_installer_no_colors: True
 foreman_installer_disable_system_checks: False
 
diff --git a/roles/foreman_installer/tasks/main.yml b/roles/foreman_installer/tasks/main.yml
index c4d64eab8..b4926e8af 100644
--- a/roles/foreman_installer/tasks/main.yml
+++ b/roles/foreman_installer/tasks/main.yml
@@ -8,7 +8,7 @@
   when: (foreman_installer_module_prs|length > 0) or (foreman_installer_module_branches|length > 0)
 
 - include_tasks: custom_hiera.yml
-  when: foreman_installer_custom_hiera
+  when: foreman_installer_custom_hiera | length > 0
 
 - include_tasks: install.yml
   when: not foreman_installer_upgrade