diff --git a/htdocs/compta/facture/class/facture-rec.class.php b/htdocs/compta/facture/class/facture-rec.class.php
index 3a5fe7166ab60..f9cd158244f0a 100644
--- a/htdocs/compta/facture/class/facture-rec.class.php
+++ b/htdocs/compta/facture/class/facture-rec.class.php
@@ -1311,7 +1311,7 @@ public function getNextDate()
 		if (empty($this->date_when)) {
 			return false;
 		}
-		return dol_time_plus_duree($this->date_when, $this->frequency, $this->unit_frequency);
+		return dol_time_plus_duree($this->date_when, $this->frequency, $this->unit_frequency, 1);
 	}
 
 	/**
diff --git a/htdocs/fourn/class/fournisseur.facture-rec.class.php b/htdocs/fourn/class/fournisseur.facture-rec.class.php
index f57cfab72fbe6..7d2ea231dfc70 100644
--- a/htdocs/fourn/class/fournisseur.facture-rec.class.php
+++ b/htdocs/fourn/class/fournisseur.facture-rec.class.php
@@ -1307,7 +1307,7 @@ public function getNextDate()
 		if (empty($this->date_when)) {
 			return false;
 		}
-		return dol_time_plus_duree((int) $this->date_when, $this->frequency, $this->unit_frequency);
+		return dol_time_plus_duree((int) $this->date_when, $this->frequency, $this->unit_frequency, 1);
 	}
 
 	/**