diff --git a/src/partition/repart.c b/src/partition/repart.c
index 2ecae4ca030..78cf60f7245 100644
--- a/src/partition/repart.c
+++ b/src/partition/repart.c
@@ -4236,7 +4236,7 @@ static int partition_encrypt(Context *context, Partition *p, PartitionTarget *ta
                                 dm_name,
                                 NULL,
                                 VOLUME_KEY_SIZE,
-                                arg_discard ? CRYPT_ACTIVATE_ALLOW_DISCARDS : 0);
+                                (arg_discard ? CRYPT_ACTIVATE_ALLOW_DISCARDS : 0) | CRYPT_ACTIVATE_PRIVATE);
                 if (r < 0)
                         return log_error_errno(r, "Failed to activate LUKS superblock: %m");