diff --git a/htdocs/core/lib/date.lib.php b/htdocs/core/lib/date.lib.php
index 43a28a4b05c..e7043a1798a 100644
--- a/htdocs/core/lib/date.lib.php
+++ b/htdocs/core/lib/date.lib.php
@@ -969,7 +969,6 @@ function monthArray($outputlangs, $short = 0)
  *  @param	int			$year			Year number
  *	@return array						Week numbers
  */
-
 function getWeekNumbersOfMonth($month, $year)
 {
 	$nb_days = cal_days_in_month(CAL_GREGORIAN, $month, $year);
diff --git a/htdocs/core/lib/project.lib.php b/htdocs/core/lib/project.lib.php
index d7275d3343a..9f55a431147 100644
--- a/htdocs/core/lib/project.lib.php
+++ b/htdocs/core/lib/project.lib.php
@@ -1727,6 +1727,7 @@ function projectLinesPerWeek(&$inc, $firstdaytoshow, $fuser, $parent, $lines, &$
  * @param   int			$restricteditformytask	0=No restriction, 1=Enable add time only if task is a task i am affected to
  * @param   array       $isavailable			Array with data that say if user is available for several days for morning and afternoon
  * @param	int			$oldprojectforbreak		Old project id of last project break
+ * @param	array		$Tweek					Array of week numbers
  * @return  array								Array with time spent for $fuser for each day of week on tasks in $lines and substasks
  */
 function projectLinesPerMonth(&$inc, $firstdaytoshow, $fuser, $parent, $lines, &$level, &$projectsrole, &$tasksrole, $mine, $restricteditformytask, &$isavailable, $oldprojectforbreak = 0, $TWeek = array())
diff --git a/htdocs/projet/activity/permonth.php b/htdocs/projet/activity/permonth.php
index 93c1edb6757..398f4c67199 100644
--- a/htdocs/projet/activity/permonth.php
+++ b/htdocs/projet/activity/permonth.php
@@ -480,7 +480,8 @@ print '<td class="liste_titre"></td>';
 print '<td class="liste_titre right"><input type="text" size="4" name="search_declared_progress" value="'.dol_escape_htmltag($search_declared_progress).'"></td>';
 print '<td class="liste_titre"></td>';
 print '<td class="liste_titre"></td>';
-for ($idw=0;$idw<count($TWeek);$idw++)
+$countWeek = count($TWeek);
+for ($idw=0;$idw<$countWeek;$idw++)
 {
 	print '<td class="liste_titre"></td>';
 }