diff --git a/src/platform/tests/TestDnssd.cpp b/src/platform/tests/TestDnssd.cpp
index 3006b00f0155e9..1102e1d3c5c665 100644
--- a/src/platform/tests/TestDnssd.cpp
+++ b/src/platform/tests/TestDnssd.cpp
@@ -83,6 +83,9 @@ static void HandleResolve(void * context, DnssdService * result, const chip::Spa
     if (ctx->mBrowsedServicesCount == ++ctx->mResolvedServicesCount)
     {
         chip::DeviceLayer::SystemLayer().CancelTimer(Timeout, context);
+        // StopEventLoopTask needs to be called from inside the Matter event loop, but we 
+        // might not be in there right now; instead we might be on some other thread, but 
+        // holding the Matter lock.
         chip::DeviceLayer::SystemLayer().ScheduleLambda([]() {
             // After last service is resolved, stop the event loop,
             // so the test case can gracefully exit.