diff --git a/htdocs/compta/stats/cabyprodserv.php b/htdocs/compta/stats/cabyprodserv.php
index f9057e1066c..0a30390e215 100644
--- a/htdocs/compta/stats/cabyprodserv.php
+++ b/htdocs/compta/stats/cabyprodserv.php
@@ -56,6 +56,8 @@ $subcat = false;
 if (GETPOST('subcat', 'alpha') === 'yes') {
 	$subcat = true;
 }
+$categorie = new Categorie($db);
+
 // product/service
 $selected_type = GETPOST('search_type', 'int');
 if ($selected_type =='') $selected_type = -1;
@@ -237,10 +239,6 @@ if ($modecompta == 'CREANCES-DETTES')
 	{
 		$sql.= " LEFT JOIN ".MAIN_DB_PREFIX."categorie_product as cp ON p.rowid = cp.fk_product";
 	}
-	elseif ($selected_cat) 	// Into a specific category
-	{
-		$sql.= ", ".MAIN_DB_PREFIX."categorie as c, ".MAIN_DB_PREFIX."categorie_product as cp";
-	}
 	$sql.= " WHERE l.fk_facture = f.rowid";
 	$sql.= " AND f.fk_statut in (1,2)";
 	$sql.= " AND l.product_type in (0,1)";
@@ -261,10 +259,24 @@ if ($modecompta == 'CREANCES-DETTES')
 		$sql.=" AND cp.fk_product is null";
 	}
 	elseif ($selected_cat) {	// Into a specific category
-		$sql.= " AND (c.rowid = ".$selected_cat;
-		if ($subcat) $sql.=" OR c.fk_parent = " . $selected_cat;
-		$sql.= ")";
-		$sql.= " AND cp.fk_categorie = c.rowid AND cp.fk_product = p.rowid";
+
+        if ($subcat)
+        {
+            $TListOfCats = $categorie->get_full_arbo('product', $selected_cat, 1);
+
+            $listofcatsql = "";
+            foreach ($TListOfCats as $key => $cat)
+            {
+                if ($key !== 0) $listofcatsql .= ",";
+                $listofcatsql .= $cat['rowid'];
+            }
+        }
+
+        $sql.= " AND (p.rowid IN ";
+        $sql .= " (SELECT fk_product FROM ".MAIN_DB_PREFIX."categorie_product cp WHERE ";
+        if ($subcat) $sql .= "cp.fk_categorie IN (". $listofcatsql.")";
+        else $sql.="cp.fk_categorie = ".$selected_cat;
+        $sql.= "))";
 	}
     if($selected_soc > 0) $sql .= " AND soc.rowid=".$selected_soc;
 	$sql.= " AND f.entity IN (".getEntity('invoice').")";