diff --git a/htdocs/accountancy/customer/index.php b/htdocs/accountancy/customer/index.php
index 06e788bab51..b7ec854fd7c 100644
--- a/htdocs/accountancy/customer/index.php
+++ b/htdocs/accountancy/customer/index.php
@@ -638,13 +638,15 @@ if ($conf->global->MAIN_FEATURES_LEVEL > 0) { // This part of code looks strange
 			if ($j > 12) {
 				$j -= 12;
 			}
-			$sql .= ' SUM('.$db->ifsql('MONTH(f.datef)='.$j,
-						' ('.$db->ifsql('fd.total_ht < 0',
-							' (-1 * (abs(fd.total_ht) - (fd.buy_price_ht * fd.qty * (fd.situation_percent / 100))))',
-							'  (fd.total_ht - (fd.buy_price_ht * fd.qty * (fd.situation_percent / 100)))').')',
-						 0).') AS month'.str_pad($j, 2, '0', STR_PAD_LEFT).',';
+			$sql .= " SUM(".$db->ifsql("MONTH(f.datef)=".$j,
+						" (".$db->ifsql("fd.total_ht < 0",
+							" (-1 * (abs(fd.total_ht) - (fd.buy_price_ht * fd.qty * (fd.situation_percent / 100))))",
+							"  (fd.total_ht - (fd.buy_price_ht * fd.qty * (fd.situation_percent / 100)))").")",
+						 0).") AS month".str_pad($j, 2, '0', STR_PAD_LEFT).",";
 		}
-		$sql .= "  SUM((fd.total_ht-(fd.qty * fd.buy_price_ht))) as total";
+		$sql .= "  SUM(".$db->ifsql("fd.total_ht < 0",
+							" (-1 * (abs(fd.total_ht) - (fd.buy_price_ht * fd.qty * (fd.situation_percent / 100))))",
+							"  (fd.total_ht - (fd.buy_price_ht * fd.qty * (fd.situation_percent / 100)))").") as total";
 
 		$sql .= " FROM ".MAIN_DB_PREFIX."facturedet as fd";
 		$sql .= "  LEFT JOIN ".MAIN_DB_PREFIX."facture as f ON f.rowid = fd.fk_facture";