diff --git a/firstboot/meson.build b/firstboot/meson.build
index 06a139e..8b3dee7 100644
--- a/firstboot/meson.build
+++ b/firstboot/meson.build
@@ -13,7 +13,7 @@
         output: 'first-boot-set-mac@.service',
         copy: true,
         install_dir:
-            set_mac.get_pkgconfig_variable('systemdsystemunitdir'),
+            set_mac.get_variable('systemdsystemunitdir'),
     )
 endif
 
@@ -29,6 +29,6 @@
         output: 'first-boot-set-hostname.service',
         copy: true,
         install_dir:
-            set_hostname.get_pkgconfig_variable('systemdsystemunitdir'),
+            set_hostname.get_variable('systemdsystemunitdir'),
     )
 endif