diff --git a/doc/jsonrpc.md b/doc/jsonrpc.md
index 6701ee07f..64207b9de 100644
--- a/doc/jsonrpc.md
+++ b/doc/jsonrpc.md
@@ -6023,6 +6023,7 @@ acceptor_backlog            | Optional | number  | The number of pending connect
 abort_timeout_sec           | Optional | number  | Abort execution timeout value, in seconds
 no_wr_batching              | Optional | boolean | Disable work requests batching (RDMA only)
 control_msg_num             | Optional | number  | The number of control messages per poll group (TCP only)
+disable_mappable_bar0       | Optional | boolean | disable client mmap() of BAR0 (VFIO-USER only)
 
 #### Example
 
diff --git a/lib/nvmf/vfio_user.c b/lib/nvmf/vfio_user.c
index db26386ef..e73232cd7 100644
--- a/lib/nvmf/vfio_user.c
+++ b/lib/nvmf/vfio_user.c
@@ -543,7 +543,7 @@ nvmf_vfio_user_destroy(struct spdk_nvmf_transport *transport,
 
 static const struct spdk_json_object_decoder vfio_user_transport_opts_decoder[] = {
 	{
-		"disable-mappable-bar0",
+		"disable_mappable_bar0",
 		offsetof(struct nvmf_vfio_user_transport, transport_opts.disable_mappable_bar0),
 		spdk_json_decode_bool, true
 	},
diff --git a/scripts/rpc.py b/scripts/rpc.py
index c1186b01c..de3cbdd06 100755
--- a/scripts/rpc.py
+++ b/scripts/rpc.py
@@ -1937,6 +1937,8 @@ Format: 'user:u1 secret:s1 muser:mu1 msecret:ms1,user:u2 secret:s2 muser:mu2 mse
     p.add_argument('-w', '--no-wr-batching', action='store_true', help='Disable work requests batching. Relevant only for RDMA transport')
     p.add_argument('-e', '--control-msg-num', help="""The number of control messages per poll group.
     Relevant only for TCP transport""", type=int)
+    p.add_argument('-M', '--disable-mappable-bar0', action='store_true', help="""Disable mmap() of BAR0.
+    Relevant only for VFIO-USER transport""")
     p.set_defaults(func=nvmf_create_transport)
 
     def nvmf_get_transports(args):
diff --git a/scripts/rpc/nvmf.py b/scripts/rpc/nvmf.py
index 2e6e27a03..abb123e27 100644
--- a/scripts/rpc/nvmf.py
+++ b/scripts/rpc/nvmf.py
@@ -118,6 +118,7 @@ def nvmf_create_transport(client, **params):
         abort_timeout_sec: Abort execution timeout value, in seconds (optional)
         no_wr_batching: Boolean flag to disable work requests batching - RDMA specific (optional)
         control_msg_num: The number of control messages per poll group - TCP specific (optional)
+        disable_mappable_bar0: disable client mmap() of BAR0 - VFIO-USER specific (optional)
     Returns:
         True or False
     """