diff --git a/meson.build b/meson.build
index fcbfedd..b101757 100644
--- a/meson.build
+++ b/meson.build
@@ -44,6 +44,7 @@
 
 sys_lib = static_library(
   'sys',
+  'bm_instance.cpp',
   'bmc_mode.cpp',
   'cable.cpp',
   'cpld.cpp',