diff --git a/htdocs/compta/bank/graph.php b/htdocs/compta/bank/graph.php
index 3e13d2a2f36..fb4e2a09a86 100644
--- a/htdocs/compta/bank/graph.php
+++ b/htdocs/compta/bank/graph.php
@@ -30,6 +30,9 @@ require_once DOL_DOCUMENT_ROOT.'/core/class/dolgraph.class.php';
 
 $langs->load("banks");
 
+$WIDTH=DolGraph::getDefaultGraphSizeForStats('width',768);
+$HEIGHT=DolGraph::getDefaultGraphSizeForStats('height',200);
+
 // Security check
 if (isset($_GET["account"]) || isset($_GET["ref"]))
 {
@@ -82,11 +85,7 @@ if ($result < 0)
 }
 else
 {
-	// Definition de $width et $height
-	$width = 768;
-	$height = 200;
-
-	// Calcul de $min et $max
+	// Calcul $min and $max
 	$sql = "SELECT MIN(b.datev) as min, MAX(b.datev) as max";
 	$sql.= " FROM ".MAIN_DB_PREFIX."bank as b";
 	$sql.= ", ".MAIN_DB_PREFIX."bank_account as ba";
@@ -239,8 +238,8 @@ else
 		$px1->SetMaxValue($px1->GetCeilMaxValue()<0?0:$px1->GetCeilMaxValue());
 		$px1->SetMinValue($px1->GetFloorMinValue()>0?0:$px1->GetFloorMinValue());
 		$px1->SetTitle($title);
-		$px1->SetWidth($width);
-		$px1->SetHeight($height);
+		$px1->SetWidth($WIDTH);
+		$px1->SetHeight($HEIGHT);
 		$px1->SetType(array('lines','lines'));
 		$px1->setBgColor('onglet');
 		$px1->setBgColorGrid(array(255,255,255));
@@ -369,8 +368,8 @@ else
 		$px2->SetMaxValue($px2->GetCeilMaxValue()<0?0:$px2->GetCeilMaxValue());
 		$px2->SetMinValue($px2->GetFloorMinValue()>0?0:$px2->GetFloorMinValue());
 		$px2->SetTitle($title);
-		$px2->SetWidth($width);
-		$px2->SetHeight($height);
+		$px2->SetWidth($WIDTH);
+		$px2->SetHeight($HEIGHT);
 		$px2->SetType(array('lines','lines'));
 		$px2->setBgColor('onglet');
 		$px2->setBgColorGrid(array(255,255,255));
@@ -478,8 +477,8 @@ else
 		$px3->SetMaxValue($px3->GetCeilMaxValue()<0?0:$px3->GetCeilMaxValue());
 		$px3->SetMinValue($px3->GetFloorMinValue()>0?0:$px3->GetFloorMinValue());
 		$px3->SetTitle($title);
-		$px3->SetWidth($width);
-		$px3->SetHeight($height);
+		$px3->SetWidth($WIDTH);
+		$px3->SetHeight($HEIGHT);
 		$px3->SetType(array('lines','lines'));
 		$px3->setBgColor('onglet');
 		$px3->setBgColorGrid(array(255,255,255));
@@ -605,8 +604,8 @@ else
 		$px4->SetMaxValue($px4->GetCeilMaxValue()<0?0:$px4->GetCeilMaxValue());
 		$px4->SetMinValue($px4->GetFloorMinValue()>0?0:$px4->GetFloorMinValue());
 		$px4->SetTitle($title);
-		$px4->SetWidth($width);
-		$px4->SetHeight($height);
+		$px4->SetWidth($WIDTH);
+		$px4->SetHeight($HEIGHT);
 		$px4->SetType(array('bars','bars'));
 		$px4->SetShading(3);
 		$px4->setBgColor('onglet');
@@ -714,8 +713,8 @@ else
 		$px5->SetMaxValue($px5->GetCeilMaxValue()<0?0:$px5->GetCeilMaxValue());
 		$px5->SetMinValue($px5->GetFloorMinValue()>0?0:$px5->GetFloorMinValue());
 		$px5->SetTitle($title);
-		$px5->SetWidth($width);
-		$px5->SetHeight($height);
+		$px5->SetWidth($WIDTH);
+		$px5->SetHeight($HEIGHT);
 		$px5->SetType(array('bars','bars'));
 		$px5->SetShading(3);
 		$px5->setBgColor('onglet');
diff --git a/htdocs/core/class/dolgraph.class.php b/htdocs/core/class/dolgraph.class.php
index dd512b25f02..0306a48eb99 100644
--- a/htdocs/core/class/dolgraph.class.php
+++ b/htdocs/core/class/dolgraph.class.php
@@ -898,14 +898,15 @@ class DolGraph
      * getDefaultGraphSizeForStats
      *
      * @param	string	$direction		'width' or 'height'
+     * @param	string	$defaultsize	Value we want as default size
      * @return	int						Value of width or height to use by default
      */
-    static function getDefaultGraphSizeForStats($direction)
+    static function getDefaultGraphSizeForStats($direction,$defaultsize='')
     {
     	global $conf;
 
-    	if ($direction == 'width')  return ($conf->dol_optimize_smallscreen?'400':'500');
-    	if ($direction == 'height') return ($conf->dol_optimize_smallscreen?'160':'200');
+    	if ($direction == 'width')  return ($conf->dol_optimize_smallscreen?'400':($defaultsize?$defaultsize:'500'));
+    	if ($direction == 'height') return ($conf->dol_optimize_smallscreen?'160':($defaultsize?$defaultsize:'200'));
     	return 0;
     }
 }