diff --git a/defaults/main.yml b/defaults/main.yml
index 44d43ff..466a1af 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -15,7 +15,7 @@ prometheus_mongodb_exporter_port: 27017
 prometheus_phpfpm_sockets_directory: "/run/php/"
 prometheus_phpfpm_sockets_directory_additional: "/var/run/php*.sock"
 
-prometheus_opcache_exporter_fcgi-uri: "unix:///var/run/php-000-default.sock"
+prometheus_opcache_exporter_fcgi_uri: "unix:///var/run/php-000-default.sock"
 
 prometheus_postgres_exporter_systemd_user: "postgres"
 prometheus_postgres_exporter_host: "/var/run/postgresql/"
diff --git a/templates/conf/prometheus-opcache-exporter.j2 b/templates/conf/prometheus-opcache-exporter.j2
index 0b99670..b90f92a 100644
--- a/templates/conf/prometheus-opcache-exporter.j2
+++ b/templates/conf/prometheus-opcache-exporter.j2
@@ -1,4 +1,4 @@
 # {{ ansible_managed }}
-{% if (prometheus_opcache_exporter_fcgi-uri is defined) %}
-ARGS='"--opcache.fcgi-uri="{{ prometheus_opcache_exporter_fcgi-uri }}"'
+{% if (prometheus_opcache_exporter_fcgi_uri is defined) %}
+ARGS='"--opcache.fcgi-uri="{{ prometheus_opcache_exporter_fcgi_uri }}"'
 {% endif %}