diff --git a/meson.build b/meson.build
index a44306a..f37ac3d 100644
--- a/meson.build
+++ b/meson.build
@@ -46,7 +46,7 @@
 libgpiodcxx = dependency('libgpiodcxx')
 
 systemd = dependency('systemd')
-servicedir = systemd.get_pkgconfig_variable('systemdsystemunitdir')
+servicedir = systemd.get_variable(pkgconfig : 'systemdsystemunitdir')
 
 services = [
     ['supply-monitor', 'power-supply-monitor@.service'],