--- a/src/gs-language.c
+++ b/src/gs-language.c
@@ -95,7 +95,7 @@
 	g_autoptr(GMarkupParseContext) context = NULL;
 
 	/* find filename */
-	filename = g_build_filename (DATADIR, "xml", "iso-codes", "iso_639.xml", NULL);
+	filename = g_build_filename ("@isocodes@", "share", "xml", "iso-codes", "iso_639.xml", NULL);
 	if (!g_file_test (filename, G_FILE_TEST_EXISTS)) {
 		g_free (filename);
 		filename = g_build_filename ("/usr", "share", "xml", "iso-codes", "iso_639.xml", NULL);