diff --git a/extensions/dnsprefetch.c b/extensions/dnsprefetch.c
index 83b52e99..31a56ee7 100644
--- a/extensions/dnsprefetch.c
+++ b/extensions/dnsprefetch.c
@@ -31,7 +31,7 @@ dnsprefetch_do_prefetch (WebKitWebView* web_view,
      if (!uri)
         return;
      s_uri = soup_uri_new (uri);
-     if (!s_uri)
+     if (!s_uri || !s_uri->host)
          return;
 
      #if GLIB_CHECK_VERSION (2, 22, 0)