diff --git a/meson.build b/meson.build
index 5d3df88..c88e1eb 100644
--- a/meson.build
+++ b/meson.build
@@ -87,7 +87,7 @@
 
 systemd = dependency('systemd')
 systemd_system_unit_dir = systemd.get_variable(
-    'systemdsystemunitdir',
+    'systemd_system_unit_dir',
     pkgconfig_define: ['prefix', get_option('prefix')],
 )