diff --git a/htdocs/compta/stats/cabyprodserv.php b/htdocs/compta/stats/cabyprodserv.php
index fb651977d7c..1c170eae96d 100644
--- a/htdocs/compta/stats/cabyprodserv.php
+++ b/htdocs/compta/stats/cabyprodserv.php
@@ -163,9 +163,6 @@ if ($modecompta=="CREANCES-DETTES") {
 	$calcmode=$langs->trans("CalcModeDebt");
 	$calcmode.='<br>('.$langs->trans("SeeReportInInputOutputMode",'<a href="'.$_SERVER["PHP_SELF"].'?year='.$year_start.'&modecompta=RECETTES-DEPENSES">','</a>').')';
 
-	$period=$form->select_date($date_start,'date_start',0,0,0,'',1,0,1).' - '.$form->select_date($date_end,'date_end',0,0,0,'',1,0,1);
-	$periodlink="<a href='".$_SERVER["PHP_SELF"]."?year=".($year_start-1)."&modecompta=".$modecompta."'>".img_previous()."</a> <a href='".$_SERVER["PHP_SELF"]."?year=".($year_start+1)."&modecompta=".$modecompta."'>".img_next()."</a>";
-	
 	$description=$langs->trans("RulesCADue");
 	if (! empty($conf->global->FACTURE_DEPOSITS_ARE_JUST_PAYMENTS)) {
 		$description.= $langs->trans("DepositsAreNotIncluded");
@@ -178,14 +175,14 @@ if ($modecompta=="CREANCES-DETTES") {
 	$calcmode=$langs->trans("CalcModeEngagement");
 	$calcmode.='<br>('.$langs->trans("SeeReportInDueDebtMode",'<a href="'.$_SERVER["PHP_SELF"].'?year='.$year_start.'&modecompta=CREANCES-DETTES">','</a>').')';
 
-	$period=$form->select_date($date_start,'date_start',0,0,0,'',1,0,1).' - '.$form->select_date($date_end,'date_end',0,0,0,'',1,0,1);
-	$periodlink="<a href='".$_SERVER["PHP_SELF"]."?year=".($year_start-1)."&modecompta=".$modecompta."'>".img_previous()."</a> <a href='".$_SERVER["PHP_SELF"]."?year=".($year_start+1)."&modecompta=".$modecompta."'>".img_next()."</a>";
-	
 	$description=$langs->trans("RulesCAIn");
 	$description.= $langs->trans("DepositsAreIncluded");
 
 	$builddate=dol_now();
 }
+$period=$form->select_date($date_start,'date_start',0,0,0,'',1,0,1).' - '.$form->select_date($date_end,'date_end',0,0,0,'',1,0,1);
+if ($date_end == dol_time_plus_duree($date_start, 1, 'y') - 1) $periodlink='<a href="'.$_SERVER["PHP_SELF"].'?year='.($year_start-1).'&modecompta='.$modecompta.'">'.img_previous().'</a> <a href="'.$_SERVER["PHP_SELF"].'?year='.($year_start+1).'&modecompta='.$modecompta.'">'.img_next().'</a>';
+else $periodlink = '';
 
 report_header($name,$namelink,$period,$periodlink,$description,$builddate,$exportlink,$tableparams,$calcmode);
 
diff --git a/htdocs/compta/stats/cabyuser.php b/htdocs/compta/stats/cabyuser.php
index a21c34e0c2f..1d386df6c6f 100644
--- a/htdocs/compta/stats/cabyuser.php
+++ b/htdocs/compta/stats/cabyuser.php
@@ -146,8 +146,6 @@ if ($modecompta=="CREANCES-DETTES") {
     $name=$langs->trans("SalesTurnover").', '.$langs->trans("ByUserAuthorOfInvoice");
     $calcmode=$langs->trans("CalcModeDebt");
     $calcmode.='<br>('.$langs->trans("SeeReportInInputOutputMode",'<a href="'.$_SERVER["PHP_SELF"].'?year='.$year_start.'&modecompta=RECETTES-DEPENSES">','</a>').')';
-	$period=$form->select_date($date_start,'date_start',0,0,0,'',1,0,1).' - '.$form->select_date($date_end,'date_end',0,0,0,'',1,0,1);
-	$periodlink="<a href='".$_SERVER["PHP_SELF"]."?year=".($year_start-1)."&modecompta=".$modecompta."'>".img_previous()."</a> <a href='".$_SERVER["PHP_SELF"]."?year=".($year_start+1)."&modecompta=".$modecompta."'>".img_next()."</a>";
     $description=$langs->trans("RulesCADue");
 	if (! empty($conf->global->FACTURE_DEPOSITS_ARE_JUST_PAYMENTS)) $description.= $langs->trans("DepositsAreNotIncluded");
 	else  $description.= $langs->trans("DepositsAreIncluded");
@@ -157,13 +155,15 @@ if ($modecompta=="CREANCES-DETTES") {
     $name=$langs->trans("SalesTurnover").', '.$langs->trans("ByUserAuthorOfInvoice");
 	$calcmode=$langs->trans("CalcModeEngagement");
 	$calcmode.='<br>('.$langs->trans("SeeReportInDueDebtMode",'<a href="'.$_SERVER["PHP_SELF"].'?year='.$year_start.'&modecompta=CREANCES-DETTES">','</a>').')';
-	$period=$form->select_date($date_start,'date_start',0,0,0,'',1,0,1).' - '.$form->select_date($date_end,'date_end',0,0,0,'',1,0,1);
-	$periodlink="<a href='".$_SERVER["PHP_SELF"]."?year=".($year_start-1)."&modecompta=".$modecompta."'>".img_previous()."</a> <a href='".$_SERVER["PHP_SELF"]."?year=".($year_start+1)."&modecompta=".$modecompta."'>".img_next()."</a>";
     $description=$langs->trans("RulesCAIn");
 	$description.= $langs->trans("DepositsAreIncluded");
     $builddate=dol_now();
     //$exportlink=$langs->trans("NotYetAvailable");
 }
+$period=$form->select_date($date_start,'date_start',0,0,0,'',1,0,1).' - '.$form->select_date($date_end,'date_end',0,0,0,'',1,0,1);
+if ($date_end == dol_time_plus_duree($date_start, 1, 'y') - 1) $periodlink='<a href="'.$_SERVER["PHP_SELF"].'?year='.($year_start-1).'&modecompta='.$modecompta.'">'.img_previous().'</a> <a href="'.$_SERVER["PHP_SELF"].'?year='.($year_start+1).'&modecompta='.$modecompta.'">'.img_next().'</a>';
+else $periodlink = '';
+
 $moreparam=array();
 if (! empty($modecompta)) $moreparam['modecompta']=$modecompta;
 
diff --git a/htdocs/compta/stats/casoc.php b/htdocs/compta/stats/casoc.php
index 9a88a1c4574..ed36d677df9 100644
--- a/htdocs/compta/stats/casoc.php
+++ b/htdocs/compta/stats/casoc.php
@@ -175,8 +175,6 @@ if ($modecompta=="CREANCES-DETTES")
 	$name=$langs->trans("SalesTurnover").', '.$langs->trans("ByThirdParties");
 	$calcmode=$langs->trans("CalcModeDebt");
 	$calcmode.='<br>('.$langs->trans("SeeReportInInputOutputMode",'<a href="'.$_SERVER["PHP_SELF"].'?year='.$year_start.'&modecompta=RECETTES-DEPENSES">','</a>').')';
-	$period=$form->select_date($date_start,'date_start',0,0,0,'',1,0,1).' - '.$form->select_date($date_end,'date_end',0,0,0,'',1,0,1);
-	$periodlink='<a href="'.$_SERVER["PHP_SELF"].'?year='.($year_start-1).'&modecompta='.$modecompta.'">'.img_previous().'</a> <a href="'.$_SERVER["PHP_SELF"].'?year='.($year_start+1).'&modecompta='.$modecompta.'">'.img_next().'</a>';
 	$description=$langs->trans("RulesCADue");
 	if (! empty($conf->global->FACTURE_DEPOSITS_ARE_JUST_PAYMENTS)) $description.= $langs->trans("DepositsAreNotIncluded");
 	else  $description.= $langs->trans("DepositsAreIncluded");
@@ -186,13 +184,14 @@ if ($modecompta=="CREANCES-DETTES")
 	$name=$langs->trans("SalesTurnover").', '.$langs->trans("ByThirdParties");
 	$calcmode=$langs->trans("CalcModeEngagement");
 	$calcmode.='<br>('.$langs->trans("SeeReportInDueDebtMode",'<a href="'.$_SERVER["PHP_SELF"].'?year='.$year_start.'&modecompta=CREANCES-DETTES">','</a>').')';
-	$period=$form->select_date($date_start,'date_start',0,0,0,'',1,0,1).' - '.$form->select_date($date_end,'date_end',0,0,0,'',1,0,1);
-	$periodlink='<a href="'.$_SERVER["PHP_SELF"].'?year='.($year_start-1).'&modecompta='.$modecompta.'">'.img_previous().'</a> <a href="'.$_SERVER["PHP_SELF"].'?year='.($year_start+1).'&modecompta='.$modecompta.'">'.img_next().'</a>';
 	$description=$langs->trans("RulesCAIn");
 	$description.= $langs->trans("DepositsAreIncluded");
 	$builddate=dol_now();
 	//$exportlink=$langs->trans("NotYetAvailable");
 }
+$period=$form->select_date($date_start,'date_start',0,0,0,'',1,0,1).' - '.$form->select_date($date_end,'date_end',0,0,0,'',1,0,1);
+if ($date_end == dol_time_plus_duree($date_start, 1, 'y') - 1) $periodlink='<a href="'.$_SERVER["PHP_SELF"].'?year='.($year_start-1).'&modecompta='.$modecompta.'">'.img_previous().'</a> <a href="'.$_SERVER["PHP_SELF"].'?year='.($year_start+1).'&modecompta='.$modecompta.'">'.img_next().'</a>';
+else $periodlink = '';
 
 report_header($name,$namelink,$period,$periodlink,$description,$builddate,$exportlink,$tableparams,$calcmode);