diff --git a/defaults/main.yml b/defaults/main.yml
index dc32c74b..b8b67ee2 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -65,7 +65,7 @@ galera_innodb_log_buffer_size: 128M
 galera_wsrep_address: "{{ ansible_ssh_host }}"
 galera_wsrep_cluster_address: "{% for host in galera_cluster_members %}{{ hostvars[host]['ansible_ssh_host'] }}{% if not loop.last %},{% endif %}{% endfor %}"
 galera_wsrep_node_incoming_address: "{{ galera_wsrep_address }}"
-galera_wsrep_slave_threads: "{{ ansible_processor_vcpus | default(2) }}"
+galera_wsrep_slave_threads: "{{ (ansible_processor_vcpus | int > 0) | ternary (ansible_processor_vcpus, 2) }}"
 galera_wsrep_retry_autocommit: 3
 galera_wsrep_debug: 0
 galera_wsrep_sst_method: xtrabackup-v2
diff --git a/templates/my.cnf.j2 b/templates/my.cnf.j2
index f4be79fc..fd682386 100644
--- a/templates/my.cnf.j2
+++ b/templates/my.cnf.j2
@@ -1,6 +1,6 @@
 {%- set all_calculated_max_connections = [] %}
 {%- for galera_node in galera_cluster_members %}
-    {%- if all_calculated_max_connections.append(hostvars[galera_node]['ansible_processor_vcpus'] | default(2) * 100) %}
+    {%- if all_calculated_max_connections.append((hostvars[galera_node]['ansible_processor_vcpus'] | int > 0) | ternary (ansible_processor_vcpus, 2) * 100) %}
     {%- endif %}
 {%- endfor %}
 {%- set calculated_max_connections = all_calculated_max_connections|sort %}
diff --git a/templates/mysql_defaults.j2 b/templates/mysql_defaults.j2
index c2e13b83..c0ac18d5 100644
--- a/templates/mysql_defaults.j2
+++ b/templates/mysql_defaults.j2
@@ -2,7 +2,7 @@
 
 {%- set all_calculated_max_connections = [] %}
 {%- for galera_node in galera_cluster_members %}
-    {%- set _ = all_calculated_max_connections.append(hostvars[galera_node]['ansible_processor_vcpus'] | default(2) * 100) %}
+    {%- set _ = all_calculated_max_connections.append((hostvars[galera_node]['ansible_processor_vcpus'] | int > 0) | ternary (ansible_processor_vcpus, 2) * 100) %}
 {%- endfor %}
 {%- set calculated_min_connections = all_calculated_max_connections | min %}
 {%- set calculated_max_connections = galera_max_connections | default(calculated_min_connections) %}