diff --git a/modules/cas_cache/volume/vol_block_dev_top.c b/modules/cas_cache/volume/vol_block_dev_top.c
index 37e16efa8..ebb3af176 100644
--- a/modules/cas_cache/volume/vol_block_dev_top.c
+++ b/modules/cas_cache/volume/vol_block_dev_top.c
@@ -359,9 +359,7 @@ static void _blockdev_handle_discard(ocf_core_t core, struct bio *bio)
 
 	io = ocf_core_new_io(core, cache_priv->io_queues[smp_processor_id()],
 			CAS_BIO_BISECTOR(bio) << SECTOR_SHIFT,
-			CAS_BIO_BISIZE(bio), OCF_WRITE, 0,
-			CAS_CLEAR_FLUSH(CAS_BIO_OP_FLAGS(bio)));
-
+			CAS_BIO_BISIZE(bio), OCF_WRITE, 0, 0);
 	if (!io) {
 		CAS_PRINT_RL(KERN_CRIT
 			"Out of memory. Ending IO processing.\n");
diff --git a/version b/version
index 30f672481..d2bff581b 100644
--- a/version
+++ b/version
@@ -1,3 +1,3 @@
 CAS_VERSION_MAIN=21
 CAS_VERSION_MAJOR=6
-CAS_VERSION_MINOR=4
+CAS_VERSION_MINOR=5