diff --git a/htdocs/core/class/commondocgenerator.class.php b/htdocs/core/class/commondocgenerator.class.php
index 937634de5d4..e544a2ccb16 100644
--- a/htdocs/core/class/commondocgenerator.class.php
+++ b/htdocs/core/class/commondocgenerator.class.php
@@ -509,6 +509,10 @@ abstract class CommonDocGenerator
 		    'line_multicurrency_total_ht_locale' => price($line->multicurrency_total_ht, 0, $outputlangs),
 		    'line_multicurrency_total_tva_locale' => price($line->multicurrency_total_tva, 0, $outputlangs),
 		    'line_multicurrency_total_ttc_locale' => price($line->multicurrency_total_ttc, 0, $outputlangs),
+
+		    // Units
+		    'line_unit'=>$line->getLabelOfUnit('long'),
+		    'line_unit_short'=>$line->getLabelOfUnit('short'),
 		);
 
 		// Retrieve extrafields