diff --git a/modules/monitoring/library/Monitoring/Plugin/Perfdata.php b/modules/monitoring/library/Monitoring/Plugin/Perfdata.php
index b1c71cb72..ef91f7f93 100644
--- a/modules/monitoring/library/Monitoring/Plugin/Perfdata.php
+++ b/modules/monitoring/library/Monitoring/Plugin/Perfdata.php
@@ -7,6 +7,7 @@ use Icinga\Util\Format;
 use InvalidArgumentException;
 use Icinga\Exception\ProgrammingError;
 use Icinga\Web\Widget\Chart\InlinePie;
+use Icinga\Module\Monitoring\Object\Service;
 use Zend_Controller_Front;
 
 class Perfdata
@@ -453,4 +454,30 @@ class Perfdata
         );
         return $parts;
     }
+
+    /**
+     * Return the state indicated by this perfdata
+     *
+     * @see Service
+     *
+     * @return int
+     */
+    public function getState()
+    {
+        if ($this->value === null) {
+            return Service::STATE_UNKNOWN;
+        }
+
+        if (! ($this->criticalThreshold === null
+            || $this->value < $this->criticalThreshold)) {
+            return Service::STATE_CRITICAL;
+        }
+
+        if (! ($this->warningThreshold === null
+            || $this->value < $this->warningThreshold)) {
+            return Service::STATE_WARNING;
+        }
+
+        return Service::STATE_OK;
+    }
 }