diff --git a/gen/xyz/openbmc_project/HardwareIsolation/meson.build b/gen/xyz/openbmc_project/HardwareIsolation/meson.build
index 5c4e7a7..442741b 100644
--- a/gen/xyz/openbmc_project/HardwareIsolation/meson.build
+++ b/gen/xyz/openbmc_project/HardwareIsolation/meson.build
@@ -1,4 +1,17 @@
 # Generated file; do not modify.
+generated_sources += custom_target(
+    'xyz/openbmc_project/HardwareIsolation__cpp'.underscorify(),
+    input: [ '../../../../yaml/xyz/openbmc_project/HardwareIsolation.errors.yaml',  ],
+    output: [ 'error.cpp', 'error.hpp',  ],
+    command: [
+        sdbuspp_gen_meson_prog, '--command', 'cpp',
+        '--output', meson.current_build_dir(),
+        '--tool', sdbusplusplus_prog,
+        '--directory', meson.current_source_dir() / '../../../../yaml',
+        'xyz/openbmc_project/HardwareIsolation',
+    ],
+)
+
 subdir('Entry')
 generated_others += custom_target(
     'xyz/openbmc_project/HardwareIsolation/Entry__markdown'.underscorify(),