diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0adcc3f..88d1584 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,10 @@
 # Changelog
 Newest updates are at the top of this file.
 
+## Nov 08 2023 - v5.5.2
+- ibmmq - #204 data race fix
+- mqmetric - deal with empty QueueSubFilter option
+
 ## Oct 19 2023 - v5.5.1
 - Update for MQ 9.3.4
 - ibmmq - Support for new CSP JWT Token field
diff --git a/mqmetric/discover.go b/mqmetric/discover.go
index 0e717ff..c541017 100644
--- a/mqmetric/discover.go
+++ b/mqmetric/discover.go
@@ -344,9 +344,13 @@ func discoverAndSubscribe(dc DiscoverConfig, redo bool) error {
 	// If you are using publications for some resource metrics, but have chosen not to collect the topics that might contain queue depth,
 	// then there's still a possibility to find that particular value from QSTATUS responses as an alternative. The SubscriptionSelector has had
 	// two topics, depending on the MQ version, which give the depth.
-	if !strings.Contains(dc.MonitoredQueues.SubscriptionSelector, "GENERAL") && !strings.Contains(dc.MonitoredQueues.SubscriptionSelector, "GET") {
+	subSel := dc.MonitoredQueues.SubscriptionSelector
+	if subSel != "" && !strings.Contains(subSel, "GENERAL") && !strings.Contains(subSel, "GET") {
 		logDebug("Setting connection to grab qdepth via QSTATUS")
 		ci.useDepthFromStatus = true
+	} else {
+		logDebug("Setting connection to grab qdepth via Publication")
+		ci.useDepthFromStatus = false
 	}
 
 	traceExitErr("discoverAndSubscribe", 0, err)
@@ -409,12 +413,12 @@ func discoverClasses(dc DiscoverConfig, metaPrefix string) error {
 					return e2
 				}
 			}
-			// - The Native HA metrics introduced in MQ 9.2.3 are not currently tested for metric name maps
-			//   and might need additional configuration to fill in an object name
-			// - The STATAPP metrics are not very useful yet as they only work for apps known at subscription
-			//   time. As well as needing additional configuration.
+
+			// The STATAPP metrics are not very useful as they only work for apps known at subscription
+			// time. As well as needing additional configuration.
 			// So we ignore these for now, but might enable them in future. Adding them to the subscription
-			// list by default would increase the handles in use without benefit.
+			// list by default would increase the handles in use without benefit. We do now support use of the
+			// NativeHA resources
 			switch cl.Name {
 			case "STATAPP":
 				logDebug("Not subscribing to Class STATAPP resources")
diff --git a/mqmetric/metrics.txt b/mqmetric/metrics.txt
index 958e2c6..36335c8 100644
--- a/mqmetric/metrics.txt
+++ b/mqmetric/metrics.txt
@@ -19,7 +19,7 @@ Metrics published on system topics
 ----------------------------------
 
 The metrics published by the queue manager under the $SYS topic tree are listed here as extracted from
-the product documentation at https://www.ibm.com/docs/en/ibm-mq/latest?topic=trace-metrics-published-system-topics. 
+the product documentation at https://www.ibm.com/docs/en/ibm-mq/latest?topic=trace-metrics-published-system-topics.
 
 Access to these metrics requires the "usePublications" configuration attribute to be set for the collector.