diff --git a/htdocs/core/boxes/box_graph_invoices_permonth.php b/htdocs/core/boxes/box_graph_invoices_permonth.php
index e4418020bfc..fe01eae730b 100644
--- a/htdocs/core/boxes/box_graph_invoices_permonth.php
+++ b/htdocs/core/boxes/box_graph_invoices_permonth.php
@@ -145,9 +145,9 @@ class box_graph_invoices_permonth extends ModeleBoxes
 
 				$filenamenb = $dir."/".$prefix."invoicesnbinyear-".$endyear.".png";
 				// default value for customer mode
-				$fileurlnb = DOL_URL_ROOT.'/viewimage.php?modulepart=billstats&file=invoicesnbinyear-'.$endyear.'.png';
+				$fileurlnb = DOL_URL_ROOT.'/viewimage.php?modulepart=billstats&file=invoicesnbinyear-'.$endyear.'.png';
 				if ($mode == 'supplier') {
-					$fileurlnb = DOL_URL_ROOT.'/viewimage.php?modulepart=billstatssupplier&file=invoicessuppliernbinyear-'.$endyear.'.png';
+					$fileurlnb = DOL_URL_ROOT.'/viewimage.php?modulepart=billstatssupplier&file=invoicessuppliernbinyear-'.$endyear.'.png';
 				}
 
 				$px1 = new DolGraph();
diff --git a/htdocs/core/boxes/box_graph_invoices_peryear.php b/htdocs/core/boxes/box_graph_invoices_peryear.php
index 14a431bcb84..22d9ad956e7 100644
--- a/htdocs/core/boxes/box_graph_invoices_peryear.php
+++ b/htdocs/core/boxes/box_graph_invoices_peryear.php
@@ -129,8 +129,10 @@ class box_graph_invoices_peryear extends ModeleBoxes
 
 			$filenamenb = $dir."/".$prefix."invoicesamountyears-".$endyear.".png";
 			// default value for customer mode
-			$fileurlnb = DOL_URL_ROOT.'/viewimage.php?modulepart=billstats&file=invoicesamountyears-'.$endyear.'.png';
-			if ($mode == 'supplier') $fileurlnb = DOL_URL_ROOT.'/viewimage.php?modulepart=billstatssupplier&file=invoicessupplieramountyears-'.$endyear.'.png';
+			$fileurlnb = DOL_URL_ROOT.'/viewimage.php?modulepart=billstats&file=invoicesamountyears-'.$endyear.'.png';
+			if ($mode == 'supplier') {
+				$fileurlnb = DOL_URL_ROOT.'/viewimage.php?modulepart=billstatssupplier&file=invoicessupplieramountyears-'.$endyear.'.png';
+			}
 
 			$px2 = new DolGraph();
 			$mesg = $px2->isGraphKo();