diff --git a/changelogs/fragments/fix_advanced_ldap_filters.yml b/changelogs/fragments/fix_advanced_ldap_filters.yml
new file mode 100644
index 00000000..b24fa005
--- /dev/null
+++ b/changelogs/fragments/fix_advanced_ldap_filters.yml
@@ -0,0 +1,2 @@
+bugfixes:
+  - "Fix quoting for ! in templating Issue #208"
diff --git a/roles/icingaweb2/templates/ini_template.j2 b/roles/icingaweb2/templates/ini_template.j2
index 9e80e30d..99f0e2b5 100644
--- a/roles/icingaweb2/templates/ini_template.j2
+++ b/roles/icingaweb2/templates/ini_template.j2
@@ -7,8 +7,10 @@
 {{ option }} = "{{ value }}"
 {% elif value is iterable and (value is not string and value is not mapping) %}
 {{ option }} = "{{ value | join(', ') }}"
+{% elif value|first == "!" %}
+{{ option }} = {{ value | quote }}
 {% elif value is string and "=" in value %}
-{{ option }} = "{{ value | quote }}"
+{{ option }} = {{ value | quote }}
 {% else %}
 {{ option }} = {{ value }}
 {% endif %}