diff --git a/Documentation/Monitors/Clustrix-Monitor.md b/Documentation/Monitors/Clustrix-Monitor.md
index f0b70a917..9fcdcb2fc 100644
--- a/Documentation/Monitors/Clustrix-Monitor.md
+++ b/Documentation/Monitors/Clustrix-Monitor.md
@@ -87,8 +87,12 @@ entire cluster. The default value is 60000 (1 minute), which should not
 be lowered as that may have an adverse effect on the Cluster itself.
 
 ```
-cluster_monitor_interval=120000
+cluster_monitor_interval=120000ms
 ```
+The interval is specified as documented
+[here](../Getting-Started/Configuration-Guide.md#durations). If no explicit unit
+is provided, the value is interpreted as milliseconds in MaxScale 2.4. In subsequent
+versions a value without a unit may be rejected.
 
 ### `health_check_threshold`
 
diff --git a/server/modules/monitor/clustrixmon/clustrixmonitor.cc b/server/modules/monitor/clustrixmon/clustrixmonitor.cc
index 7f67f5c23..3db5d839e 100644
--- a/server/modules/monitor/clustrixmon/clustrixmonitor.cc
+++ b/server/modules/monitor/clustrixmon/clustrixmonitor.cc
@@ -208,6 +208,8 @@ ClustrixMonitor* ClustrixMonitor::create(const string& name, const string& modul
     return pThis;
 }
 
+using std::chrono::milliseconds;
+
 bool ClustrixMonitor::configure(const MXS_CONFIG_PARAMETER* pParams)
 {
     if (!MonitorWorker::configure(pParams))
@@ -220,7 +222,8 @@ bool ClustrixMonitor::configure(const MXS_CONFIG_PARAMETER* pParams)
     m_health_urls.clear();
     m_nodes_by_id.clear();
 
-    m_config.set_cluster_monitor_interval(pParams->get_integer(CLUSTER_MONITOR_INTERVAL_NAME));
+    long interval = pParams->get_duration<milliseconds>(CLUSTER_MONITOR_INTERVAL_NAME).count();
+    m_config.set_cluster_monitor_interval(interval);
     m_config.set_health_check_threshold(pParams->get_integer(HEALTH_CHECK_THRESHOLD_NAME));
     m_config.set_dynamic_node_detection(pParams->get_bool(DYNAMIC_NODE_DETECTION_NAME));
     m_config.set_health_check_port(pParams->get_integer(HEALTH_CHECK_PORT_NAME));