diff --git a/lib/Resque/Worker.php b/lib/Resque/Worker.php
index 3add46e..946a215 100644
--- a/lib/Resque/Worker.php
+++ b/lib/Resque/Worker.php
@@ -427,7 +427,7 @@ public function killChild()
 		}
 
 		$this->logger->log(Psr\Log\LogLevel::INFO, 'Killing child at {child}', array('child' => $this->child));
-		if(exec('ps -o pid,state -p ' . $this->child, $output, $returnCode) && $returnCode != 1) {
+		if(exec('ps -o pid,s -p ' . $this->child, $output, $returnCode) && $returnCode != 1) {
 			$this->logger->log(Psr\Log\LogLevel::DEBUG, 'Child {child} found, killing.', array('child' => $this->child));
 			posix_kill($this->child, SIGKILL);
 			$this->child = null;
@@ -471,7 +471,7 @@ public function pruneDeadWorkers()
 	public function workerPids()
 	{
 		$pids = array();
-		exec('ps -A -o pid,command | grep [r]esque', $cmdOutput);
+		exec('ps -A -o pid,args | grep [r]esque', $cmdOutput);
 		foreach($cmdOutput as $line) {
 			list($pids[],) = explode(' ', trim($line), 2);
 		}