diff --git a/meson.build b/meson.build
index d11437a..c7d3c95 100644
--- a/meson.build
+++ b/meson.build
@@ -105,7 +105,7 @@
 
 systemd = dependency('systemd')
 libsystemd_dep = dependency('libsystemd')
-servicedir = systemd.get_variable('systemdsystemunitdir')
+servicedir = systemd.get_variable('systemd_system_unit_dir')
 
 services = [
     ['supply-monitor', 'power-supply-monitor@.service'],