diff --git a/drivers/scsi/ses.c b/drivers/scsi/ses.c
index 45df83b9d847122abac77e2d7a9d5a59eb2cfb95..0fe031f003e7e8e5082dc91469204e53b35067b5 100644
--- a/drivers/scsi/ses.c
+++ b/drivers/scsi/ses.c
@@ -61,7 +61,7 @@ static int ses_probe(struct device *dev)
 	return err;
 }
 
-#define SES_TIMEOUT 30
+#define SES_TIMEOUT (30 * HZ)
 #define SES_RETRIES 3
 
 static int ses_recv_diag(struct scsi_device *sdev, int page_code,