diff --git a/htdocs/core/modules/expedition/doc/pdf_rouget.modules.php b/htdocs/core/modules/expedition/doc/pdf_rouget.modules.php
index c9a8ee3b602..8b0dd134d65 100644
--- a/htdocs/core/modules/expedition/doc/pdf_rouget.modules.php
+++ b/htdocs/core/modules/expedition/doc/pdf_rouget.modules.php
@@ -712,8 +712,8 @@ class pdf_rouget extends ModelePdfExpedition
 
 		if ($totalWeight != '') $totalWeighttoshow = showDimensionInBestUnit($totalWeight, 0, "weight", $outputlangs);
 		if ($totalVolume != '') $totalVolumetoshow = showDimensionInBestUnit($totalVolume, 0, "volume", $outputlangs);
-		if ($object->trueWeight) $totalWeighttoshow = showDimensionInBestUnit($object->trueWeight, $object->weight_units, "weight", $outputlangs);
-		if ($object->trueVolume) $totalVolumetoshow = showDimensionInBestUnit($object->trueVolume, $object->volume_units, "volume", $outputlangs);
+		if (!empty($object->trueWeight)) $totalWeighttoshow = showDimensionInBestUnit($object->trueWeight, $object->weight_units, "weight", $outputlangs);
+		if (!empty($object->trueVolume)) $totalVolumetoshow = showDimensionInBestUnit($object->trueVolume, $object->volume_units, "volume", $outputlangs);
 
 		$pdf->SetFillColor(255, 255, 255);
 		$pdf->SetXY($col1x, $tab2_top + $tab2_hl * $index);