diff --git a/htdocs/langs/en_US/cashdesk.lang b/htdocs/langs/en_US/cashdesk.lang
index ec86076ac22..a70e470e8a8 100644
--- a/htdocs/langs/en_US/cashdesk.lang
+++ b/htdocs/langs/en_US/cashdesk.lang
@@ -96,3 +96,4 @@ ByTerminal=By terminal
 TakeposNumpadUsePaymentIcon=Use payment icon on numpad
 CashDeskRefNumberingModules=Numbering module for cash desk
 CashDeskGenericMaskCodes6 = <br><b>{TN}</b> tag is used to add the terminal number
+TakeposGroupSameProduct=Group same products lines
diff --git a/htdocs/langs/fr_FR/cashdesk.lang b/htdocs/langs/fr_FR/cashdesk.lang
index acf44920aa9..106630d5b17 100644
--- a/htdocs/langs/fr_FR/cashdesk.lang
+++ b/htdocs/langs/fr_FR/cashdesk.lang
@@ -90,6 +90,7 @@ BrowserMethodDescription=Simple and easy receipt printing. Only a few parameters
 TakeposNumpadUsePaymentIcon=Utilisation d'icônes sur les touches des modes de règlement du pavé numérique
 CashDeskRefNumberingModules=Modèles de numérotation des caisses
 CashDeskGenericMaskCodes6 = <br>La balise <b>{TN}</b> permet de rajouter le numéro du terminal
+TakeposGroupSameProduct=Regrouper les mêmes lignes de produits
 PrintMethod=Print method
 ReceiptPrinterMethodDescription=Powerful method with a lot of parameters. Full customizable with templates. Cannot print from the cloud.
 ByTerminal=By terminal
diff --git a/htdocs/takepos/admin/setup.php b/htdocs/takepos/admin/setup.php
index 195e5bc306f..a7967169db8 100644
--- a/htdocs/takepos/admin/setup.php
+++ b/htdocs/takepos/admin/setup.php
@@ -304,6 +304,12 @@ $array = array('rowid' => 'ID', 'ref' => 'Ref', 'label' => 'Label', 'datec' => '
 print $form->selectarray('TAKEPOS_SORTPRODUCTFIELD', $array, (empty($conf->global->TAKEPOS_SORTPRODUCTFIELD) ? 'rowid' : $conf->global->TAKEPOS_SORTPRODUCTFIELD), 0, 0, 0, '', 1);
 print "</td></tr>\n";
 
+print '<tr class="oddeven"><td>';
+print $langs->trans('TakeposGroupSameProduct');
+print '<td colspan="2">';
+print ajax_constantonoff("TAKEPOS_GROUP_SAME_PRODUCT", array(), $conf->entity, 0, 0, 1, 0);
+print "</td></tr>\n";
+
 $substitutionarray = pdf_getSubstitutionArray($langs, null, null, 2);
 $substitutionarray['__(AnyTranslationKey)__'] = $langs->trans("Translation");
 $htmltext = '<i>'.$langs->trans("AvailableVariables").':<br>';
diff --git a/htdocs/takepos/invoice.php b/htdocs/takepos/invoice.php
index 799d32546c3..683b74edc4b 100644
--- a/htdocs/takepos/invoice.php
+++ b/htdocs/takepos/invoice.php
@@ -326,7 +326,23 @@ if ($action == "addline")
 		}
 	}
 
-    $idoflineadded = $invoice->addline($prod->description, $price, 1, $tva_tx, $localtax1_tx, $localtax2_tx, $idproduct, $customer->remise_percent, '', 0, 0, 0, '', $price_base_type, $price_ttc, $prod->type, -1, 0, '', 0, $parent_line, null, 0, '', 0, 100, '', null, 0);
+	$idoflineadded = 0;
+	if (!empty($conf->global->TAKEPOS_GROUP_SAME_PRODUCT)) {
+		foreach ($invoice->lines as $line) {
+			if ($line->product_ref == $prod->ref) {
+				$result = $invoice->updateline($line->id, $line->desc, $line->subprice, $line->qty+1, $line->remise_percent, $line->date_start, $line->date_end, $line->tva_tx, $line->localtax1_tx, $line->localtax2_tx, 'HT', $line->info_bits, $line->product_type, $line->fk_parent_line, 0, $line->fk_fournprice, $line->pa_ht, $line->label, $line->special_code, $line->array_options, $line->situation_percent, $line->fk_unit);
+				if ($result < 0) {
+					dol_htmloutput_errors($invoice->error, $invoice->errors, 1);
+				} else {
+					$idoflineadded = $line->id;
+				}
+				break;
+			}
+		}
+	}
+	if ($idoflineadded <= 0) {
+		$idoflineadded = $invoice->addline($prod->description, $price, 1, $tva_tx, $localtax1_tx, $localtax2_tx, $idproduct, $customer->remise_percent, '', 0, 0, 0, '', $price_base_type, $price_ttc, $prod->type, -1, 0, '', 0, $parent_line, null, 0, '', 0, 100, '', null, 0);
+	}
 
     $invoice->fetch($placeid);
 }