diff --git a/src/waitpid.cc b/src/waitpid.cc
index 6cc76e3..0123749 100644
--- a/src/waitpid.cc
+++ b/src/waitpid.cc
@@ -16,6 +16,7 @@ static Handle<Value> Waitpid(const Arguments& args) {
     child = args[0]->Int32Value();
 
     do {
+      usleep(1000);
       r = waitpid(child, &status, WNOHANG);
     } while (r != -1);