diff --git a/htdocs/supplier_proposal/class/supplier_proposal.class.php b/htdocs/supplier_proposal/class/supplier_proposal.class.php
index 882c4bc5f3a..de73b7a0296 100644
--- a/htdocs/supplier_proposal/class/supplier_proposal.class.php
+++ b/htdocs/supplier_proposal/class/supplier_proposal.class.php
@@ -929,7 +929,7 @@ class SupplierProposal extends CommonObject
 		$sql .= ", multicurrency_tx";
 		$sql .= ") ";
 		$sql .= " VALUES (";
-		$sql .= $this->socid;
+		$sql .= ((int) $this->socid);
 		$sql .= ", 0";
 		$sql .= ", ".((double) $this->remise);
 		$sql .= ", ".($this->remise_percent ? ((double) $this->remise_percent) : 'null');
@@ -949,9 +949,9 @@ class SupplierProposal extends CommonObject
 		$sql .= ", ".($this->shipping_method_id > 0 ? ((int) $this->shipping_method_id) : 'NULL');
 		$sql .= ", ".($this->fk_project > 0 ? ((int) $this->fk_project) : "null");
 		$sql .= ", ".((int) $conf->entity);
-		$sql .= ", ".(int) $this->fk_multicurrency;
+		$sql .= ", ".((int) $this->fk_multicurrency);
 		$sql .= ", '".$this->db->escape($this->multicurrency_code)."'";
-		$sql .= ", ".(double) $this->multicurrency_tx;
+		$sql .= ", ".((double) $this->multicurrency_tx);
 		$sql .= ")";
 
 		dol_syslog(get_class($this)."::create", LOG_DEBUG);
@@ -3021,29 +3021,29 @@ class SupplierProposalLine extends CommonObjectLine
 		$sql .= ' ref_fourn,';
 		$sql .= ' fk_multicurrency, multicurrency_code, multicurrency_subprice, multicurrency_total_ht, multicurrency_total_tva, multicurrency_total_ttc, fk_unit)';
 		$sql .= " VALUES (".$this->fk_supplier_proposal.",";
-		$sql .= " ".($this->fk_parent_line > 0 ? "'".$this->db->escape($this->fk_parent_line)."'" : "null").",";
+		$sql .= " ".($this->fk_parent_line > 0 ? ((int) $this->db->escape($this->fk_parent_line)) : "null").",";
 		$sql .= " ".(!empty($this->label) ? "'".$this->db->escape($this->label)."'" : "null").",";
 		$sql .= " '".$this->db->escape($this->desc)."',";
-		$sql .= " ".($this->fk_product ? "'".$this->db->escape($this->fk_product)."'" : "null").",";
+		$sql .= " ".($this->fk_product ? ((int) $this->fk_product) : "null").",";
 		$sql .= " '".$this->db->escape($this->product_type)."',";
 		$sql .= " ".($this->date_start ? "'".$this->db->idate($this->date_start)."'" : "null").",";
 		$sql .= " ".($this->date_end ? "'".$this->db->idate($this->date_end)."'" : "null").",";
-		$sql .= " ".($this->fk_remise_except ? "'".$this->db->escape($this->fk_remise_except)."'" : "null").",";
+		$sql .= " ".($this->fk_remise_except ? ((int) $this->db->escape($this->fk_remise_except)) : "null").",";
 		$sql .= " ".price2num($this->qty, 'MS').",";
 		$sql .= " ".price2num($this->tva_tx).",";
 		$sql .= " ".price2num($this->localtax1_tx).",";
 		$sql .= " ".price2num($this->localtax2_tx).",";
 		$sql .= " '".$this->db->escape($this->localtax1_type)."',";
 		$sql .= " '".$this->db->escape($this->localtax2_type)."',";
-		$sql .= " ".(!empty($this->subprice) ?price2num($this->subprice, 'MU') : "null").",";
+		$sql .= " ".(!empty($this->subprice) ? price2num($this->subprice, 'MU') : "null").",";
 		$sql .= " ".((float) $this->remise_percent).",";
-		$sql .= " ".(isset($this->info_bits) ? ((int) $this->info_bits)."'" : "null").",";
+		$sql .= " ".(isset($this->info_bits) ? ((int) $this->info_bits) : "null").",";
 		$sql .= " ".price2num($this->total_ht, 'MT').",";
 		$sql .= " ".price2num($this->total_tva, 'MT').",";
 		$sql .= " ".price2num($this->total_localtax1, 'MT').",";
 		$sql .= " ".price2num($this->total_localtax2, 'MT').",";
 		$sql .= " ".price2num($this->total_ttc, 'MT').",";
-		$sql .= " ".(!empty($this->fk_fournprice) ? "'".$this->db->escape($this->fk_fournprice)."'" : "null").",";
+		$sql .= " ".(!empty($this->fk_fournprice) ? ((int) $this->fk_fournprice) : "null").",";
 		$sql .= " ".(isset($this->pa_ht) ? price2num($this->pa_ht, 'MU') : "null").",";
 		$sql .= ' '.((int) $this->special_code).',';
 		$sql .= ' '.((int) $this->rang).',';