diff --git a/0001-adapter-Fix-Failed-to-set-default-system-config-star.patch b/0001-adapter-Fix-Failed-to-set-default-system-config-star.patch
new file mode 100644
index 0000000..138b06a
--- /dev/null
+++ b/0001-adapter-Fix-Failed-to-set-default-system-config-star.patch
@@ -0,0 +1,47 @@
+From b9a72fef5cd51f849ce01c9f2775d129a687d855 Mon Sep 17 00:00:00 2001
+From: Bastien Nocera <hadess@hadess.net>
+Date: Thu, 19 Mar 2026 11:52:06 +0100
+Subject: [PATCH] adapter: Fix "Failed to set default system config" startup
+ warning
+
+When using a stock configuration, there will be nothing in the list of
+configuration changes to apply to the Bluetooth adapter, which since
+5e5b46c5c0cc ("adapter: Do not send empty default system parameter
+list") would throw an error, as sending an empty list to the adapter
+didn't generate one.
+
+bluetoothd[3291147]: Bluetooth daemon 5.86
+bluetoothd[3291147]: Starting SDP server
+bluetoothd[3291147]: Using external plugins is not officially supported.
+bluetoothd[3291147]: Consider upstreaming your plugins into the BlueZ project.
+bluetoothd[3291147]: Bluetooth management interface 1.23 initialized
+bluetoothd[3291147]: Battery Provider Manager created
+bluetoothd[3291147]: Failed to set default system config for hci0
+
+Fixes: 5e5b46c5c0cc ("adapter: Do not send empty default system parameter list")
+Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
+---
+ src/adapter.c | 7 +++++--
+ 1 file changed, 5 insertions(+), 2 deletions(-)
+
+diff --git a/src/adapter.c b/src/adapter.c
+index 4e5ff219fe8b..04568dae6e98 100644
+--- a/src/adapter.c
++++ b/src/adapter.c
+@@ -4963,8 +4963,11 @@ static void load_defaults(struct btd_adapter *adapter)
+ 	if (!load_le_defaults(adapter, list, &btd_opts.defaults.le))
+ 		goto done;
+ 
+-	if (mgmt_tlv_list_size(list) == 0)
+-		goto done;
++	/* No changes from defaults */
++	if (mgmt_tlv_list_size(list) == 0) {
++		mgmt_tlv_list_free(list);
++		return;
++	}
+ 
+ 	err = mgmt_send_tlv(adapter->mgmt, MGMT_OP_SET_DEF_SYSTEM_CONFIG,
+ 			adapter->dev_id, list, NULL, NULL, NULL);
+-- 
+2.53.0
+
diff --git a/bluez.spec b/bluez.spec
index 0530927..3d2723e 100644
--- a/bluez.spec
+++ b/bluez.spec
@@ -6,7 +6,7 @@
 
 Name:    bluez
 Version: 5.86
-Release: 1%{?dist}
+Release: 2%{?dist}
 Summary: Bluetooth utilities
 License: GPL-2.0-or-later
 URL:     http://www.bluez.org/
@@ -29,6 +29,8 @@ Patch6: 0001-a2dp-connect-source-profile-after-sink.patch
 Patch7: bluetoothctl-no-output.patch
 # https://patchwork.kernel.org/project/bluetooth/patch/20260311111540.2170373-2-hadess@hadess.net/
 Patch8: 0001-tools-btmgmt-Fix-btmgmt-help-hanging.patch
+# https://git.kernel.org/pub/scm/bluetooth/bluez.git/commit/?id=b9a72fef5cd51f849ce01c9f2775d129a687d855
+Patch9: 0001-adapter-Fix-Failed-to-set-default-system-config-star.patch
 
 BuildRequires: dbus-devel >= 1.6
 BuildRequires: glib2-devel
@@ -352,6 +354,10 @@ install emulator/btvirt ${RPM_BUILD_ROOT}/%{_libexecdir}/bluetooth/
 %{_userunitdir}/obex.service
 
 %changelog
+* Fri Mar 27 2026 Bastien Nocera <bnocera@redhat.com> - 5.86-2
+- Fix startup warning
+  Resolves: RHEL-155826
+
 * Tue Feb 10 2026 Bastien Nocera <bnocera@redhat.com> - 5.86-1
 - Update to 5.86
 - Re-add btmgmt as it does not require bluetoothd to be running,