diff --git a/htdocs/margin/customerMargins.php b/htdocs/margin/customerMargins.php
index 34aea94e70f..b1328fbff66 100644
--- a/htdocs/margin/customerMargins.php
+++ b/htdocs/margin/customerMargins.php
@@ -50,9 +50,9 @@ $pagenext = $page + 1;
 $startdate=$enddate='';
 
 if (!empty($_POST['startdatemonth']))
-  $startdate  = dol_mktime(12, 0, 0, $_POST['startdatemonth'],  $_POST['startdateday'],  $_POST['startdateyear']);
+  $startdate  = dol_mktime(0, 0, 0, $_POST['startdatemonth'],  $_POST['startdateday'],  $_POST['startdateyear']);
 if (!empty($_POST['enddatemonth']))
-  $enddate  = dol_mktime(12, 0, 0, $_POST['enddatemonth'],  $_POST['enddateday'],  $_POST['enddateyear']);
+  $enddate  = dol_mktime(23, 59, 59, $_POST['enddatemonth'],  $_POST['enddateday'],  $_POST['enddateyear']);
 
 /*
  * View
diff --git a/htdocs/margin/productMargins.php b/htdocs/margin/productMargins.php
index b8d5f7f66ba..88b97df78fc 100644
--- a/htdocs/margin/productMargins.php
+++ b/htdocs/margin/productMargins.php
@@ -72,9 +72,9 @@ $pagenext = $page + 1;
 $startdate=$enddate='';
 
 if (!empty($_POST['startdatemonth']))
-  $startdate  = dol_mktime(12, 0, 0, $_POST['startdatemonth'], $_POST['startdateday'], $_POST['startdateyear']);
+  $startdate  = dol_mktime(0, 0, 0, $_POST['startdatemonth'], $_POST['startdateday'], $_POST['startdateyear']);
 if (!empty($_POST['enddatemonth']))
-  $enddate  = dol_mktime(12, 0, 0, $_POST['enddatemonth'], $_POST['enddateday'], $_POST['enddateyear']);
+  $enddate  = dol_mktime(23, 59, 59, $_POST['enddatemonth'], $_POST['enddateday'], $_POST['enddateyear']);
 
 
 /*