diff --git a/test/nvmf/host/fio.sh b/test/nvmf/host/fio.sh
index 85f9a00f1..47c56a392 100755
--- a/test/nvmf/host/fio.sh
+++ b/test/nvmf/host/fio.sh
@@ -35,7 +35,7 @@ PLUGIN_DIR=$rootdir/examples/nvme/fio_plugin
 
 # Test fio_plugin as host with malloc backend
 fio_nvme $PLUGIN_DIR/example_config.fio --filename="trtype=$TEST_TRANSPORT adrfam=IPv4 \
-traddr=$NVMF_FIRST_TARGET_IP trsvcid=$NVMF_PORT ns=1"
+traddr=$NVMF_FIRST_TARGET_IP trsvcid=$NVMF_PORT ns=1" --bs=4096
 
 # second test mocking multiple SGL elements
 fio_nvme $PLUGIN_DIR/mock_sgl_config.fio --filename="trtype=$TEST_TRANSPORT adrfam=IPv4 \
@@ -53,7 +53,7 @@ if [ $RUN_NIGHTLY -eq 1 ]; then
 	$rpc_py nvmf_subsystem_add_ns nqn.2016-06.io.spdk:cnode2 lvs_0/lbd_0
 	$rpc_py nvmf_subsystem_add_listener nqn.2016-06.io.spdk:cnode2 -t $TEST_TRANSPORT -a $NVMF_FIRST_TARGET_IP -s $NVMF_PORT
 	fio_nvme $PLUGIN_DIR/example_config.fio --filename="trtype=$TEST_TRANSPORT adrfam=IPv4 \
-	traddr=$NVMF_FIRST_TARGET_IP trsvcid=$NVMF_PORT ns=1"
+	traddr=$NVMF_FIRST_TARGET_IP trsvcid=$NVMF_PORT ns=1" --bs=4096
 	$rpc_py nvmf_delete_subsystem nqn.2016-06.io.spdk:cnode2
 
 	# Test fio_plugin as host with nvme lvol nested backend
@@ -64,7 +64,7 @@ if [ $RUN_NIGHTLY -eq 1 ]; then
 	$rpc_py nvmf_subsystem_add_ns nqn.2016-06.io.spdk:cnode3 lvs_n_0/lbd_nest_0
 	$rpc_py nvmf_subsystem_add_listener nqn.2016-06.io.spdk:cnode3 -t $TEST_TRANSPORT -a $NVMF_FIRST_TARGET_IP -s $NVMF_PORT
 	fio_nvme $PLUGIN_DIR/example_config.fio --filename="trtype=$TEST_TRANSPORT adrfam=IPv4 \
-	traddr=$NVMF_FIRST_TARGET_IP trsvcid=$NVMF_PORT ns=1"
+	traddr=$NVMF_FIRST_TARGET_IP trsvcid=$NVMF_PORT ns=1" --bs=4096
 	$rpc_py nvmf_delete_subsystem nqn.2016-06.io.spdk:cnode3
 
 	sync