diff --git a/extensions/web-cache.c b/extensions/web-cache.c
index 4e4d07cd..33c34299 100644
--- a/extensions/web-cache.c
+++ b/extensions/web-cache.c
@@ -323,8 +323,14 @@ web_cache_mesage_got_headers_cb (SoupMessage* msg,
         if (!web_cache_save_headers (msg, filename))
             return;
 
+        #if GLIB_CHECK_VERSION (2, 20, 0)
         ostream = (GOutputStream*)g_file_append_to (file,
             G_FILE_CREATE_PRIVATE | G_FILE_CREATE_REPLACE_DESTINATION, NULL, NULL);
+        #else
+        g_unlink (filename);
+        ostream = (GOutputStream*)g_file_append_to (file,
+            G_FILE_CREATE_PRIVATE, NULL, NULL);
+        #endif
         g_object_unref (file);
 
         if (!ostream)