diff --git a/htdocs/product/stats/commande.php b/htdocs/product/stats/commande.php
index 9898c13f21b..b55b43d218d 100644
--- a/htdocs/product/stats/commande.php
+++ b/htdocs/product/stats/commande.php
@@ -59,7 +59,7 @@ $pageprev = $page - 1;
 $pagenext = $page + 1;
 if (!$sortorder) $sortorder = "DESC";
 if (!$sortfield) $sortfield = "c.date_commande";
-$search_month = GETPOST('search_month', 'alpha');
+$search_month = GETPOST('search_month', 'int');
 $search_year = GETPOST('search_year', 'int');
 
 if (GETPOST('button_removefilter_x', 'alpha') || GETPOST('button_removefilter', 'alpha')) {
diff --git a/htdocs/product/stats/commande_fournisseur.php b/htdocs/product/stats/commande_fournisseur.php
index c111e075972..b4a837679a9 100644
--- a/htdocs/product/stats/commande_fournisseur.php
+++ b/htdocs/product/stats/commande_fournisseur.php
@@ -61,7 +61,7 @@ if (!$sortorder)
 	$sortorder = "DESC";
 if (!$sortfield)
 	$sortfield = "c.date_commande";
-$search_month = GETPOST('search_month', 'alpha');
+$search_month = GETPOST('search_month', 'int');
 $search_year = GETPOST('search_year', 'int');
 
 if (GETPOST('button_removefilter_x', 'alpha') || GETPOST('button_removefilter', 'alpha')) {
diff --git a/htdocs/product/stats/facture.php b/htdocs/product/stats/facture.php
index d4bbe68386c..f858dbc91e4 100644
--- a/htdocs/product/stats/facture.php
+++ b/htdocs/product/stats/facture.php
@@ -61,7 +61,7 @@ $pagenext = $page + 1;
 if (!$sortorder) $sortorder = "DESC";
 if (!$sortfield) $sortfield = "f.datef";
 
-$search_month = GETPOST('search_month', 'alpha');
+$search_month = GETPOST('search_month', 'int');
 $search_year = GETPOST('search_year', 'int');
 
 if (GETPOST('button_removefilter_x', 'alpha') || GETPOST('button_removefilter', 'alpha')) {
diff --git a/htdocs/product/stats/facture_fournisseur.php b/htdocs/product/stats/facture_fournisseur.php
index f39d4ab73b3..58d52452654 100644
--- a/htdocs/product/stats/facture_fournisseur.php
+++ b/htdocs/product/stats/facture_fournisseur.php
@@ -60,7 +60,7 @@ $pageprev = $page - 1;
 $pagenext = $page + 1;
 if (!$sortorder) $sortorder = "DESC";
 if (!$sortfield) $sortfield = "f.datef";
-$search_month = GETPOST('search_month', 'alpha');
+$search_month = GETPOST('search_month', 'int');
 $search_year = GETPOST('search_year', 'int');
 
 if (GETPOST('button_removefilter_x', 'alpha') || GETPOST('button_removefilter', 'alpha')) {
diff --git a/htdocs/product/stats/propal.php b/htdocs/product/stats/propal.php
index f5b097d0655..2dffd4d78d6 100644
--- a/htdocs/product/stats/propal.php
+++ b/htdocs/product/stats/propal.php
@@ -60,7 +60,7 @@ $pagenext = $page + 1;
 if (!$sortorder) $sortorder = "DESC";
 if (!$sortfield) $sortfield = "p.datep";
 
-$search_month = GETPOST('search_month', 'alpha');
+$search_month = GETPOST('search_month', 'int');
 $search_year = GETPOST('search_year', 'int');
 
 if (GETPOST('button_removefilter_x', 'alpha') || GETPOST('button_removefilter', 'alpha')) {
diff --git a/htdocs/product/stats/supplier_proposal.php b/htdocs/product/stats/supplier_proposal.php
index 5a59cbb9c83..8d5b8ad14c4 100644
--- a/htdocs/product/stats/supplier_proposal.php
+++ b/htdocs/product/stats/supplier_proposal.php
@@ -60,7 +60,7 @@ $pagenext = $page + 1;
 if (!$sortorder) $sortorder = "DESC";
 if (!$sortfield) $sortfield = "p.date_valid";
 
-$search_month = GETPOST('search_month', 'alpha');
+$search_month = GETPOST('search_month', 'int');
 $search_year = GETPOST('search_year', 'int');
 
 if (GETPOST('button_removefilter_x', 'alpha') || GETPOST('button_removefilter', 'alpha')) {