diff --git a/lib/Resque/Worker.php b/lib/Resque/Worker.php
index 2f4a1e0..edfe9fc 100644
--- a/lib/Resque/Worker.php
+++ b/lib/Resque/Worker.php
@@ -175,7 +175,7 @@ class Resque_Worker
 				else {
 					$this->updateProcLine('Waiting for ' . implode(',', $this->queues));
 				}
-				sleep($interval);
+				usleep($interval*1000000);
 				continue;
 			}