--- src/sys/dev/disk/aic/aic.c	2008/02/10 00:01:02	1.13
+++ src/sys/dev/disk/aic/aic.c	2008/05/18 20:30:21	1.14
@@ -1527,7 +1527,7 @@ aic_attach(struct aic_softc *aic)
 	 * Construct our SIM entry
 	 */
 	aic->sim = cam_sim_alloc(aic_action, aic_poll, "aic", aic,
-				 aic->unit, 2, 256, NULL);
+				 aic->unit, &sim_mplock, 2, 256, NULL);
 	if (aic->sim == NULL)
 		return (ENOMEM);