--- a/geocode-glib/tests/meson.build
+++ b/geocode-glib/tests/meson.build
@@ -1,4 +1,4 @@
-install_dir = get_option('prefix') / get_option('datadir') / 'installed-tests' / library_name
+install_dir = get_option('installed_test_prefix') / 'share' / 'installed-tests' / library_name
 
 e = executable('geo-uri',
                'geo-uri.c',
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -1,6 +1,9 @@
 option('enable-installed-tests',
        type: 'boolean', value: true,
        description: 'Build & install test programs')
+option('installed_test_prefix',
+       type: 'string', value: '',
+       description: 'Prefix for installed tests')
 option('enable-introspection',
         type: 'boolean', value: true,
         description: 'Whether to enable the introspection generation')