diff --git a/htdocs/core/class/dolreceiptprinter.class.php b/htdocs/core/class/dolreceiptprinter.class.php
index e075005b437..b984f1ab2ce 100644
--- a/htdocs/core/class/dolreceiptprinter.class.php
+++ b/htdocs/core/class/dolreceiptprinter.class.php
@@ -634,7 +634,7 @@ class dolReceiptPrinter extends Printer
 							if ($line->fk_product)
 							{
 								$spacestoadd = $nbcharactbyline - strlen($line->ref) - strlen($line->qty) - 10 - 1;
-								$spaces = str_repeat(' ', $spacestoadd);
+								$spaces = str_repeat(' ', $spacestoadd > 0 ? $spacestoadd : 0);
 								$this->printer->text($line->ref.$spaces.$line->qty.' '.str_pad(price($line->total_ttc), 10, ' ', STR_PAD_LEFT)."\n");
 								$this->printer->text(strip_tags(htmlspecialchars_decode($line->product_label))."\n");
 							}