Change weight filter decimals

[Zionnnn]

I have changed the weight in localization from kg to g. Which now also shows on the front-end in the filter with slider. But I would like to remove the decimals:

I tried adjusting the product.tpl with this:

{if isset($product.weight) && ($product.weight != 0)}
  <meta property="product:weight:value" content="{$product.weight|intval}">
  <meta property="product:weight:units" content="{$product.weight_unit}">
{/if}

But no luck. Any other suggestions?