diff --git a/tools/gst-play.c b/tools/gst-play.c
index bbcde11079..15c9aa26d9 100644
--- a/tools/gst-play.c
+++ b/tools/gst-play.c
@@ -641,7 +641,7 @@ add_to_playlist (GPtrArray * playlist, const gchar * filename)
     while ((entry = g_dir_read_name (dir))) {
       gchar *path;
 
-      path = g_strconcat (filename, G_DIR_SEPARATOR_S, entry, NULL);
+      path = g_build_filename (filename, entry, NULL);
       files = g_list_insert_sorted (files, path, compare);
     }