diff --git a/scst/src/dev_handlers/scst_vdisk.c b/scst/src/dev_handlers/scst_vdisk.c
index da107dd26..db2f0d640 100644
--- a/scst/src/dev_handlers/scst_vdisk.c
+++ b/scst/src/dev_handlers/scst_vdisk.c
@@ -693,7 +693,7 @@ static void vdisk_check_tp_support(struct scst_vdisk_dev *virt_dev)
 				virt_dev->filename);
 			goto out_close;
 		}
-#if LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 31)
+#if LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 32) || (defined(RHEL_MAJOR) && RHEL_MAJOR -0 >= 6)
 		virt_dev->dev_thin_provisioned =
 			blk_queue_discard(bdev_get_queue(inode->i_bdev));
 #endif