do not run HTML markup through translation

I cannot translate the text that appears below the geofield openlayers map widget:
"Use the icons to select what type of feature to draw. Each map can contain one simple feature. Pan and zoom with arrows and the zoom bar."

This text appears as follows in geofield.widgets.openlayers.inc:
'#markup' => t('<div class="description geofield-help">Use the icons to select what type of feature to draw. Each map can contain one simple feature. Pan and zoom with arrows and the zoom bar.</div>')

The problem is that the Drupal translation UI or .po import do not allow translating HTML markup.
I get this error (for a Greek translation):
The submitted string contains disallowed HTML:<div class=\"description geofield-help\">Πατήστε το εικονίδιο με το μολύβι (+) για να ορίσετε συντεταγμένες. Για να διαγράψετε τις συντεταγμένες, πατήστε το διπλανό εικονίδιο, επιλέξτε το σημείο και πατήστε Delete.</div>

So I suggest modifying the code to:
'#markup' => '<div class="description geofield-help">' . t('Use the icons to select what type of feature to draw. Each map can contain one simple feature. Pan and zoom with arrows and the zoom bar.') . '</div>'