diff --git a/src/darwin/Framework/CHIP/MTRDeviceConnectivityMonitor.mm b/src/darwin/Framework/CHIP/MTRDeviceConnectivityMonitor.mm
index 6a9ac601d41b6f..530d608fd63b29 100644
--- a/src/darwin/Framework/CHIP/MTRDeviceConnectivityMonitor.mm
+++ b/src/darwin/Framework/CHIP/MTRDeviceConnectivityMonitor.mm
@@ -120,6 +120,10 @@ - (void)handleResolvedHostname:(const char *)hostName port:(uint16_t)port error:
 {
     std::lock_guard lock(sConnectivityMonitorLock);
 
+    if (hostName == NULL) {
+        MTR_LOG_ERROR("%@ NULL host resolved, ignoring", self);
+        return;
+    }
     // dns_sd.h: must check and call deallocate if error is kDNSServiceErr_ServiceNotRunning
     if (error == kDNSServiceErr_ServiceNotRunning) {
         MTR_LOG_ERROR("%@ disconnected from dns-sd subsystem", self);