diff --git a/src/debug.cc b/src/debug.cc
index ca3c1db..c41e545 100644
--- a/src/debug.cc
+++ b/src/debug.cc
@@ -3037,7 +3037,8 @@
 
 
 MessageDispatchHelperThread::MessageDispatchHelperThread()
-    : sem_(OS::CreateSemaphore(0)), mutex_(OS::CreateMutex()),
+    : Thread("v8:MsgDispHelpr"),
+      sem_(OS::CreateSemaphore(0)), mutex_(OS::CreateMutex()),
       already_signalled_(false) {
 }