diff --git a/meson_options.txt b/meson_options.txt
index 0b2254e..be31fe1 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -12,6 +12,9 @@ option('systemd_system_unit_dir',
 option('dbus_service_dir',
     description: 'Directory for dbus service files',
     type: 'string')
+option('pam_modules_dir',
+    description: 'Directory for PAM modules',
+    type: 'string')
 option('gtk_doc',
     type: 'boolean',
     value: false,
diff --git a/pam/meson.build b/pam/meson.build
index 6a342b0..e95bcde 100644
--- a/pam/meson.build
+++ b/pam/meson.build
@@ -1,5 +1,8 @@
 mapfile = files('pam_fprintd.ver')
-pam_modules_dir = '/' + get_option('libdir') / 'security'
+pam_modules_dir = get_option('pam_modules_dir')
+if pam_modules_dir == ''
+    pam_modules_dir = '/' / get_option('libdir') / 'security'
+endif
 
 pam_fprintd = shared_module('pam_fprintd',
     name_prefix: '',