diff --git a/roles/osm-vector-maps/tasks/main.yml b/roles/osm-vector-maps/tasks/main.yml
index 1eb1299e0..c6e53b3ae 100644
--- a/roles/osm-vector-maps/tasks/main.yml
+++ b/roles/osm-vector-maps/tasks/main.yml
@@ -98,3 +98,9 @@
   systemd:
     name: nginx
     state: reloaded
+
+- name: "Add 'osm_vector_maps_installed: True' to {{ iiab_state_file }}"
+  lineinfile:
+    dest: "{{ iiab_state_file }}"    # /etc/iiab/iiab_state.yml
+    regexp: '^osm_vector_maps_installed'
+    line: 'osm_vector_maps_installed: True'