diff --git a/roles/munin/tasks/main.yml b/roles/munin/tasks/main.yml
index 8812ddf01..7aba3803d 100644
--- a/roles/munin/tasks/main.yml
+++ b/roles/munin/tasks/main.yml
@@ -1,3 +1,11 @@
+- assert:
+    that: munin_install is defined and munin_install is sameas true
+    success_msg: munin_install is defined and munin_install is sameas true
+
+- assert:
+    that: munin_enabled is defined and munin_enabled | type_debug == 'bool'
+    success_msg: munin_enabled is defined and munin_enabled | type_debug == 'bool'
+
 - name: Install Munin if 'munin_installed' is not defined in {{ iiab_state_file }}    # /etc/iiab/iiab_state.yml
   include_tasks: install.yml
   when: munin_installed is undefined