diff --git a/htdocs/core/boxes/box_graph_invoices_permonth.php b/htdocs/core/boxes/box_graph_invoices_permonth.php
index ad2505374b8..dc02d7421df 100644
--- a/htdocs/core/boxes/box_graph_invoices_permonth.php
+++ b/htdocs/core/boxes/box_graph_invoices_permonth.php
@@ -149,7 +149,8 @@ class box_graph_invoices_permonth extends ModeleBoxes
 					$i=$startyear;$legend=array();
 					while ($i <= $endyear)
 					{
-						if ($startmonth != 0) {
+						if ($startmonth != 0)
+						{
 							$legend[]=sprintf("%d/%d",$i-2001, $i-2000);
 						}
 						else
@@ -193,7 +194,8 @@ class box_graph_invoices_permonth extends ModeleBoxes
 					$i=$startyear;$legend=array();
 					while ($i <= $endyear)
 					{
-						if ($startmonth != 0) {
+						if ($startmonth != 0)
+						{
 							$legend[]=sprintf("%d/%d",$i-2001, $i-2000);
 						}
 						else
diff --git a/htdocs/core/boxes/box_graph_invoices_supplier_permonth.php b/htdocs/core/boxes/box_graph_invoices_supplier_permonth.php
index 83779501df7..12836031714 100644
--- a/htdocs/core/boxes/box_graph_invoices_supplier_permonth.php
+++ b/htdocs/core/boxes/box_graph_invoices_supplier_permonth.php
@@ -146,7 +146,8 @@ class box_graph_invoices_supplier_permonth extends ModeleBoxes
 					$i=$startyear;$legend=array();
 					while ($i <= $endyear)
 					{
-						if ($startmonth != 0) {
+						if ($startmonth != 0)
+						{
 							$legend[]=sprintf("%d/%d",$i-2001, $i-2000);
 						}
 						else
@@ -190,7 +191,8 @@ class box_graph_invoices_supplier_permonth extends ModeleBoxes
 					$i=$startyear;$legend=array();
 					while ($i <= $endyear)
 					{
-						if ($startmonth != 0) {
+						if ($startmonth != 0)
+						{
 							$legend[]=sprintf("%d/%d",$i-2001, $i-2000);
 						}
 						else
diff --git a/htdocs/core/boxes/box_graph_orders_permonth.php b/htdocs/core/boxes/box_graph_orders_permonth.php
index 8aa465782b6..b338d562132 100644
--- a/htdocs/core/boxes/box_graph_orders_permonth.php
+++ b/htdocs/core/boxes/box_graph_orders_permonth.php
@@ -147,7 +147,8 @@ class box_graph_orders_permonth extends ModeleBoxes
 					$i=$startyear;$legend=array();
 					while ($i <= $endyear)
 					{
-						if ($startmonth != 0) {
+						if ($startmonth != 0)
+						{
 							$legend[]=sprintf("%d/%d",$i-2001, $i-2000);
 						}
 						else
@@ -189,7 +190,8 @@ class box_graph_orders_permonth extends ModeleBoxes
 					$i=$startyear;$legend=array();
 					while ($i <= $endyear)
 					{
-						if ($startmonth != 0) {
+						if ($startmonth != 0)
+						{
 							$legend[]=sprintf("%d/%d",$i-2001, $i-2000);
 						}
 						else
diff --git a/htdocs/core/boxes/box_graph_orders_supplier_permonth.php b/htdocs/core/boxes/box_graph_orders_supplier_permonth.php
index a5d5c9e6c0f..e9ec246fef0 100644
--- a/htdocs/core/boxes/box_graph_orders_supplier_permonth.php
+++ b/htdocs/core/boxes/box_graph_orders_supplier_permonth.php
@@ -146,7 +146,8 @@ class box_graph_orders_supplier_permonth extends ModeleBoxes
 					$i=$startyear;$legend=array();
 					while ($i <= $endyear)
 					{
-						if ($startmonth != 0) {
+						if ($startmonth != 0)
+						{
 							$legend[]=sprintf("%d/%d",$i-2001, $i-2000);
 						}
 						else
@@ -188,7 +189,8 @@ class box_graph_orders_supplier_permonth extends ModeleBoxes
 					$i=$startyear;$legend=array();
 					while ($i <= $endyear)
 					{
-						if ($startmonth != 0) {
+						if ($startmonth != 0)
+						{
 							$legend[]=sprintf("%d/%d",$i-2001, $i-2000);
 						}
 						else
diff --git a/htdocs/core/boxes/box_graph_propales_permonth.php b/htdocs/core/boxes/box_graph_propales_permonth.php
index 763cdb855f9..effe625b930 100644
--- a/htdocs/core/boxes/box_graph_propales_permonth.php
+++ b/htdocs/core/boxes/box_graph_propales_permonth.php
@@ -147,7 +147,8 @@ class box_graph_propales_permonth extends ModeleBoxes
 					$i=$startyear;$legend=array();
 					while ($i <= $endyear)
 					{
-						if ($startmonth != 0) {
+						if ($startmonth != 0)
+						{
 							$legend[]=sprintf("%d/%d",$i-2001, $i-2000);
 						}
 						else
@@ -192,7 +193,8 @@ class box_graph_propales_permonth extends ModeleBoxes
 					$i=$startyear;$legend=array();
 					while ($i <= $endyear)
 					{
-						if ($startmonth != 0) {
+						if ($startmonth != 0)
+						{
 							$legend[]=sprintf("%d/%d",$i-2001, $i-2000);
 						}
 						else
diff --git a/htdocs/core/class/stats.class.php b/htdocs/core/class/stats.class.php
index b41c1d8dfa6..2544441e16b 100644
--- a/htdocs/core/class/stats.class.php
+++ b/htdocs/core/class/stats.class.php
@@ -40,11 +40,11 @@ abstract class Stats
 	 * @param 	int		$startyear		End year
 	 * @param	int		$cachedelay		Delay we accept for cache file (0=No read, no save of cache, -1=No read but save)
      * @param	int		$format			0=Label of absiss is a translated text, 1=Label of absiss is month number, 2=Label of absiss is first letter of month
-	 * @param   int 		$startmonth		month of the fiscal year start minus 1; 0=january
+	 * @param   int 	$startmonth		month of the fiscal year start min 1 max 12 ; if 0 = january
      * @return 	array					Array of values
 
 	 */
-	public function getNbByMonthWithPrevYear($endyear, $startyear, $cachedelay = 0, $format = 0, $startmonth=0)
+	public function getNbByMonthWithPrevYear($endyear, $startyear, $cachedelay = 0, $format = 0, $startmonth = 0)
 	{
 		global $conf,$user,$langs;
 
@@ -140,10 +140,10 @@ abstract class Stats
 	 * @param	int		$startyear		End year
 	 * @param	int		$cachedelay		Delay we accept for cache file (0=No read, no save of cache, -1=No read but save)
      * @param	int		$format			0=Label of absiss is a translated text, 1=Label of absiss is month number, 2=Label of absiss is first letter of month
-	 * @param   int 	$startmonth		month of the fiscal year start minus 1; 0=january
+	 * @param   int 	$startmonth		month of the fiscal year start min 1 max 12 ; if 0 = january
 	 * @return 	array					Array of values
 	 */
-	public function getAmountByMonthWithPrevYear($endyear, $startyear, $cachedelay = 0, $format = 0, $startmonth=0)
+	public function getAmountByMonthWithPrevYear($endyear, $startyear, $cachedelay = 0, $format = 0, $startmonth = 0)
 	{
 		global $conf,$user,$langs;