diff --git a/sys/dev/disk/mpt/mpt_cam.c b/sys/dev/disk/mpt/mpt_cam.c
--- a/sys/dev/disk/mpt/mpt_cam.c
+++ b/sys/dev/disk/mpt/mpt_cam.c
@@ -4332,7 +4332,7 @@
 		mpt->trt[lun].enabled = 0;
 	}
 	for (i = 0; i < MPT_MAX_LUNS; i++) {
-		if (mpt->trt[lun].enabled) {
+		if (mpt->trt[i].enabled) {
 			break;
 		}
 	}