# Symbol with tilde AND sub/super-scripts

I need to typeset a mathematical symbol consisting of a letter with a tilde and both sub- and super-scripts. The subscript is fine, but the tilde runs into the superscript. How can I fix this?

Here is the culprit:

\tilde{t}_{k_1}^{k_3}


which produces:

\documentclass{article}
$\tilde{t}_{k_1}^{\,k_3}$