diff --git a/README.md b/README.md
index 0f71678..da32a9e 100644
--- a/README.md
+++ b/README.md
@@ -25,7 +25,7 @@ There is a [Transifex project](https://transifex.com/projects/p/dolibarr-module-
 
 ## Installation
 
-Prerequisites: You must have Dolibarr ERP & CRM software installed. You can download it from [Dolistore.org](https://www.dolibarr.org).
+Prerequisites: You must have Dolibarr ERP & CRM software installed. You can download it from [Dolibarr.org](https://www.dolibarr.org).
 You can also get a ready-to-use instance in the cloud from https://saas.dolibarr.org
 
 
diff --git a/class/timesheetweek.class.php b/class/timesheetweek.class.php
index f4443e6..ee9180b 100644
--- a/class/timesheetweek.class.php
+++ b/class/timesheetweek.class.php
@@ -49,7 +49,7 @@ class TimesheetWeek extends CommonObject
 	public $table_element = 'timesheet_week';
 
 	/**
-	 * @var string 		If permission must be checkec with hasRight('timesheetweek', 'read') and not hasright('mymodyle', 'timesheetweek', 'read'), you can uncomment this line
+	 * @var string 		If permission must be checked with hasRight('timesheetweek', 'read') and not hasRight('mymodule', 'timesheetweek', 'read'), you can uncomment this line
 	 */
 	//public $element_for_permission = 'timesheetweek';
 
@@ -135,13 +135,13 @@ class TimesheetWeek extends CommonObject
 	public $fields = array(
 		"rowid" => array("type" => "int", "label" => "TechnicalID", "enabled" => "1", 'position' => 10, 'notnull' => 1, "visible" => "0",),
 		"ref" => array("type" => "varchar(50)", "label" => "Ref", "enabled" => "1", 'position' => 15, 'notnull' => 1, "visible" => "1", "csslist" => "tdoverflowmax150", "showoncombobox" => "1",),
-		"fk_user" => array("type" => "integer:User:user/class/user.class.php", "label" => "Fkuser", "picto" => "user", "enabled" => "1", 'position' => 20, 'notnull' => 1, "visible" => "-1", "css" => "maxwidth500 widthcentpercentminusxx", "csslist" => "tdoverflowmax150",),
+		"fk_user" => array("type" => "integer:User:user/class/user.class.php", "label" => "User", "picto" => "user", "enabled" => "1", 'position' => 20, 'notnull' => 1, "visible" => "-1", "css" => "maxwidth500 widthcentpercentminusxx", "csslist" => "tdoverflowmax150",),
 		"year" => array("type" => "smallint", "label" => "Year", "enabled" => "1", 'position' => 25, 'notnull' => 1, "visible" => "-1",),
 		"week" => array("type" => "smallint", "label" => "Week", "enabled" => "1", 'position' => 30, 'notnull' => 1, "visible" => "-1",),
 		"status" => array("type" => "smallint", "label" => "Status", "enabled" => "1", 'position' => 500, 'notnull' => 1, "visible" => "-1", "default" => "0",),
 		"note" => array("type" => "text", "label" => "Note", "enabled" => "1", 'position' => 45, 'notnull' => 0, "visible" => "-1",),
 		"date_creation" => array("type" => "datetime", "label" => "DateCreation", "enabled" => "1", 'position' => 50, 'notnull' => 0, "visible" => "-1",),
-		"date_validation" => array("type" => "datetime", "label" => "Datevalidation", "enabled" => "1", 'position' => 55, 'notnull' => 0, "visible" => "-1",),
+		"date_validation" => array("type" => "datetime", "label" => "DateValidation", "enabled" => "1", 'position' => 55, 'notnull' => 0, "visible" => "-1",),
 		"fk_user_valid" => array("type" => "integer:User:user/class/user.class.php", "label" => "UserValidation", "picto" => "user", "enabled" => "1", 'position' => 60, 'notnull' => 0, "visible" => "-1", "css" => "maxwidth500 widthcentpercentminusxx", "csslist" => "tdoverflowmax150",),
 		"tms" => array("type" => "timestamp", "label" => "DateModification", "enabled" => "1", 'position' => 65, 'notnull' => 0, "visible" => "-1",),
 	);
diff --git a/class/timesheetweekline.class.php b/class/timesheetweekline.class.php
index 09e94ff..9eb0ab1 100644
--- a/class/timesheetweekline.class.php
+++ b/class/timesheetweekline.class.php
@@ -13,10 +13,12 @@
 
 require_once DOL_DOCUMENT_ROOT.'/core/class/commonobjectline.class.php';
 
-class TimesheetWeekLine extends CommonObject
+class TimesheetWeekLine extends CommonObjectLine
 {
     public $element = 'timesheetweekline';
     public $table_element = 'timesheet_week_line';
+    public $fk_element = 'fk_timesheet_week';
+    public $parent_element = 'timesheetweek';
 
     public $fk_timesheet_week;
     public $fk_task;
diff --git a/lib/timesheetweek.lib.php b/lib/timesheetweek.lib.php
index 37677ed..22c09eb 100644
--- a/lib/timesheetweek.lib.php
+++ b/lib/timesheetweek.lib.php
@@ -321,7 +321,14 @@ function timesheetweekShowPerWeek($db, $userId, $year, $week)
  */
 function formatHours($hoursDecimal)
 {
-	$h = floor($hoursDecimal);
-	$m = round(($hoursDecimal - $h) * 60);
-	return sprintf("%02d:%02d", $h, $m);
+    $hoursDecimal = (float) $hoursDecimal;
+    $hours = (int) floor($hoursDecimal);
+    $minutes = (int) round(($hoursDecimal - $hours) * 60);
+
+    if ($minutes >= 60) {
+        $hours += (int) floor($minutes / 60);
+        $minutes = $minutes % 60;
+    }
+
+    return sprintf("%02d:%02d", $hours, $minutes);
 }
diff --git a/tests/FormatHoursTest.php b/tests/FormatHoursTest.php
new file mode 100644
index 0000000..a6c3ecb
--- /dev/null
+++ b/tests/FormatHoursTest.php
@@ -0,0 +1,27 @@
+<?php
+require_once __DIR__.'/../lib/timesheetweek.lib.php';
+
+$cases = [
+    'zero hours' => [0, '00:00'],
+    'quarter hour' => [1.25, '01:15'],
+    'round up minutes' => [1.999, '02:00'],
+    'fifty nine point five minutes' => [59.5 / 60, '01:00'],
+    'half hour' => [2.5, '02:30'],
+    'over twenty four hours' => [24.5, '24:30'],
+    'string input' => ['3.1', '03:06'],
+];
+
+$errors = [];
+foreach ($cases as $label => [$input, $expected]) {
+    $actual = formatHours($input);
+    if ($actual !== $expected) {
+        $errors[] = sprintf('%s: expected %s, got %s', $label, $expected, $actual);
+    }
+}
+
+if ($errors) {
+    fwrite(STDERR, "formatHours tests failed:\n".implode("\n", $errors)."\n");
+    exit(1);
+}
+
+echo "All formatHours tests passed.\n";