diff --git a/meson.build b/meson.build
index a172113..852d2be 100644
--- a/meson.build
+++ b/meson.build
@@ -218,7 +218,7 @@
 ] + extra_unit_files
 
 systemd_system_unit_dir = dependency('systemd').get_variable(
-    'systemdsystemunitdir',
+    'systemd_system_unit_dir',
     pkgconfig_define: ['prefix', get_option('prefix')],
 )
 foreach u : unit_files