--- a/xpcom/glue/nsThreadUtils.cpp
+++ b/xpcom/glue/nsThreadUtils.cpp
@@ -401,16 +401,20 @@ protected:
 };
 
 NS_IMPL_ISUPPORTS(InitNamedThreadRunnable, nsIRunnable)
 
 NS_IMETHODIMP
 InitNamedThreadRunnable::Run()
 {
   PR_SetCurrentThreadName(mName.BeginReading());
+
+  char stackBaseGuess;
+  profiler_register_thread(mName.BeginReading(), &stackBaseGuess);
+
   return NS_OK;
 }
 
 } // namespace
 
 #endif // !XPCOM_GLUE_AVOID_NSPR
 
 nsresult