diff --git a/meson.build b/meson.build
index a517f77..610b4ba 100644
--- a/meson.build
+++ b/meson.build
@@ -42,6 +42,10 @@
 
 configure_file(output: 'config.h', configuration: conf)
 
+if(get_option('warm-reboot').enabled())
+    add_project_arguments('-DENABLE_WARM_REBOOT',language:'cpp')
+endif
+
 sdbusplus = dependency('sdbusplus')
 sdeventplus = dependency('sdeventplus')
 phosphorlogging = dependency('phosphor-logging')