diff --git a/gio/gbufferedinputstream.c b/gio/gbufferedinputstream.c
index b0e609c0d..14495c4a0 100644
--- a/gio/gbufferedinputstream.c
+++ b/gio/gbufferedinputstream.c
@@ -896,7 +896,8 @@ g_buffered_input_stream_seek (GSeekable     *seekable,
   
   if (type == G_SEEK_CUR)
     {
-      if (offset <= priv->end - priv->pos && offset >= -priv->pos)
+      if (offset <= (goffset) (priv->end - priv->pos) &&
+          offset >= (goffset) -priv->pos)
 	{
 	  priv->pos += offset;
 	  return TRUE;