diff --git a/roles/common/templates/tarsnap_sources.list.j2 b/roles/common/templates/tarsnap_sources.list.j2
index 94cbce3..b9dc0ec 100644
--- a/roles/common/templates/tarsnap_sources.list.j2
+++ b/roles/common/templates/tarsnap_sources.list.j2
@@ -1,4 +1,4 @@
-{% if ansible_distribution_version | version_compare('18.04', '==') %}
+{% if ansible_distribution_version is version_compare('18.04', '==') %}
 # 2018-03-17: no Ubuntu 18.04 "bionic" packages yet, so use 17.10 "artful"
 deb https://pkg.tarsnap.com/deb/artful ./
 {% else %}
diff --git a/roles/mariadb/templates/mariadb.list.j2 b/roles/mariadb/templates/mariadb.list.j2
index bfbc8dd..7d3679d 100644
--- a/roles/mariadb/templates/mariadb.list.j2
+++ b/roles/mariadb/templates/mariadb.list.j2
@@ -1,7 +1,7 @@
 # {{ ansible_managed }}
 {% if ansible_distribution == 'Ubuntu' %}
 
-{% if ansible_distribution_version | version_compare('18.04', '==') %}
+{% if ansible_distribution_version is version_compare('18.04', '==') %}
 # 2018-03-17: no Ubuntu 18.04 "bionic" packages yet, so use 17.10 "artful"
 deb [arch=amd64,i386] http://mariadb.mirror.serveriai.lt/repo/10.2/ubuntu artful main
 {% else %}
diff --git a/roles/nginx/templates/nginx_org_sources.list.j2 b/roles/nginx/templates/nginx_org_sources.list.j2
index edbfe7f..d9b3d5b 100644
--- a/roles/nginx/templates/nginx_org_sources.list.j2
+++ b/roles/nginx/templates/nginx_org_sources.list.j2
@@ -2,14 +2,14 @@
 
 {% if ansible_distribution == 'Ubuntu' %}
 {% if nginx_version == "stable" %}
-{% if ansible_distribution_version | version_compare('18.04', '==') %}
+{% if ansible_distribution_version is version_compare('18.04', '==') %}
 # 2018-03-17: no Ubuntu 18.04 "bionic" packages yet, so use 17.10 "artful"
 deb https://nginx.org/packages/ubuntu/ artful nginx
 {% else %}
 deb https://nginx.org/packages/ubuntu/ {{ ansible_distribution_release }} nginx
 {% endif %}
 {% elif nginx_version == "mainline" %}
-{% if ansible_distribution_version | version_compare('18.04', '==') %}
+{% if ansible_distribution_version is version_compare('18.04', '==') %}
 # 2018-03-17: no Ubuntu 18.04 "bionic" packages yet, so use 17.10 "artful"
 deb https://nginx.org/packages/mainline/ubuntu/ artful nginx
 {% else %}
diff --git a/roles/nginx/templates/vhost.conf.j2 b/roles/nginx/templates/vhost.conf.j2
index b7d140e..f7cc107 100644
--- a/roles/nginx/templates/vhost.conf.j2
+++ b/roles/nginx/templates/vhost.conf.j2
@@ -66,7 +66,7 @@ server {
         {# As of Ubuntu 16.04 and Debian 9, the PHP-FPM configs are the same #}
         {% if (ansible_distribution == 'Ubuntu' and ansible_distribution_version is version_compare('16.04', '==')) or (ansible_distribution == 'Debian' and ansible_distribution_major_version is version_compare('9', '==')) %}
         fastcgi_pass unix:/run/php/php7.0-fpm-{{ domain_name }}.sock;
-        {% elif ansible_distribution == 'Ubuntu' and ansible_distribution_version | version_compare('18.04', '==') %}
+        {% elif ansible_distribution == 'Ubuntu' and ansible_distribution_version is version_compare('18.04', '==') %}
         fastcgi_pass unix:/run/php/php7.2-fpm-{{ domain_name }}.sock;
         {% else %}
         fastcgi_pass unix:/var/run/php5-fpm-{{ domain_name }}.sock;
diff --git a/roles/php-fpm/tasks/main.yml b/roles/php-fpm/tasks/main.yml
index a7b35d6..dbaa102 100644
--- a/roles/php-fpm/tasks/main.yml
+++ b/roles/php-fpm/tasks/main.yml
@@ -9,7 +9,7 @@
 
 - name: Configure php-fpm on Ubuntu 18.04
   include_tasks: Ubuntu_18.04.yml
-  when: ansible_distribution == 'Ubuntu' and ansible_distribution_version | version_compare('18.04', '==')
+  when: ansible_distribution == 'Ubuntu' and ansible_distribution_version is version_compare('18.04', '==')
   tags: php-fpm
 
 # vim: set ts=2 sw=2: