diff --git a/_data/rules.yml b/_data/rules.yml
index 3f81b9a..2863b29 100644
--- a/_data/rules.yml
+++ b/_data/rules.yml
@@ -1279,9 +1279,9 @@ groups:
                 description: Too many connection errors to {{ $labels.server }} server (> 100 req/s). Request throughput may be to high.
                 query: (sum by (proxy) (rate(haproxy_server_connection_errors_total[1m]))) > 100
                 severity: critical
-              - name: HAProxy backend max active session
-                description: HAproxy backend {{ $labels.fqdn }}/{{ $labels.backend }} is reaching session limit (> 80%).
-                query: avg_over_time(((sum by (proxy) (haproxy_server_max_sessions)) / (sum by (proxy) (haproxy_server_limit_sessions))) [2m:]) * 100 > 80
+              - name: HAProxy backend max active session > 80%
+                description: Session limit from backend {{ $labels.proxy }} to server {{ $labels.server }} reached 80% of limit - {{ $value | printf "%.2f"}}%
+                query: ((haproxy_server_max_sessions >0) * 100) / (haproxy_server_limit_sessions > 0) > 80
                 severity: warning
                 for: 2m
               - name: HAProxy pending requests