diff --git a/include/scsi/scsi_host.h b/include/scsi/scsi_host.h
index 4908480..2b6956e 100644
--- a/include/scsi/scsi_host.h
+++ b/include/scsi/scsi_host.h
@@ -873,7 +873,7 @@
 				       SHOST_DIF_TYPE2_PROTECTION,
 				       SHOST_DIF_TYPE3_PROTECTION };
 
-	if (target_type > SHOST_DIF_TYPE3_PROTECTION)
+	if (target_type >= ARRAY_SIZE(cap))
 		return 0;
 
 	return shost->prot_capabilities & cap[target_type] ? target_type : 0;
@@ -887,7 +887,7 @@
 				       SHOST_DIX_TYPE2_PROTECTION,
 				       SHOST_DIX_TYPE3_PROTECTION };
 
-	if (target_type > SHOST_DIX_TYPE3_PROTECTION)
+	if (target_type >= ARRAY_SIZE(cap))
 		return 0;
 
 	return shost->prot_capabilities & cap[target_type];