diff --git a/galette/lib/Galette/Entity/Contribution.php b/galette/lib/Galette/Entity/Contribution.php
index 5f48be896..940b8c79d 100644
--- a/galette/lib/Galette/Entity/Contribution.php
+++ b/galette/lib/Galette/Entity/Contribution.php
@@ -173,7 +173,7 @@ public function __construct(Db $zdb, Login $login, int|array|ArrayObject $args =
                     } else {
                         // Caution : the next_begin_date is the day after the due_date.
                         $next_begin_date = clone $due_date;
-                        $next_begin_date->add(new \DateInterval('P1D'));
+                        $next_begin_date->add(new DateInterval('P1D'));
                         $this->begin_date = $next_begin_date->format('Y-m-d');
                     }
                 }
@@ -249,7 +249,6 @@ protected function setFields(): self
         return $this;
     }
 
-
     /**
      * Sets end contribution date
      *
@@ -263,11 +262,11 @@ private function retrieveEndDate(): void
         $begin_date = new \DateTime($this->begin_date);
         if ($preferences->pref_beg_membership != '') {
             //case beginning of membership
-            if ($this->_type->extension < 1) { // 0 = donate; -1= else duration (months)
+            if ($this->type->extension < 1) { // 0 = donate; -1= else duration (months)
                 list($j, $m) = explode('/', $preferences->pref_beg_membership);
                 $next_begin_date = new DateTime($begin_date->format('Y') . '-' . $m . '-' . $j);
                 while ($next_begin_date <= $begin_date) {
-                    $next_begin_date->add(new \DateInterval('P1Y'));
+                    $next_begin_date->add(new DateInterval('P1Y'));
                 }
 
                 if ($preferences->pref_membership_offermonths > 0) {
@@ -276,33 +275,33 @@ private function retrieveEndDate(): void
 
                     //count days between next membership begin date and offered months
                     $tdate = clone $next_begin_date;
-                    $tdate->sub(new \DateInterval('P' . $preferences->pref_membership_offermonths . 'M'));
+                    $tdate->sub(new DateInterval('P' . $preferences->pref_membership_offermonths . 'M'));
                     $diff2 = (int)$next_begin_date->diff($tdate)->format('%a');
 
                     //when number of days until next membership begin date is less than or equal to the offered months, it's free :)
                     if ($diff1 <= $diff2) {
-                        $next_begin_date->add(new \DateInterval('P1Y'));
+                        $next_begin_date->add(new DateInterval('P1Y'));
                     }
                 }
 
                 // Caution : the end_date to retrieve is the day before the next_begin_date.
                 $end_date = clone $next_begin_date;
-                $end_date->sub(new \DateInterval('P1D'));
+                $end_date->sub(new DateInterval('P1D'));
             } else {
-                $dext = new \DateInterval('P' . $this->_type->extension . 'M');
+                $dext = new DateInterval('P' . $this->type->extension . 'M');
                 $end_date = $begin_date->add($dext);
-                $end_date->sub(new \DateInterval('P1D')); //-1 day
+                $end_date->sub(new DateInterval('P1D')); //-1 day
             }
         } elseif ($preferences->pref_membership_ext != '') {
             //case membership extension
             if ($this->extension == null) {
                 $this->extension = $preferences->pref_membership_ext;
             }
-            $dext = new \DateInterval('P' . $this->extension . 'M');
+            $dext = new DateInterval('P' . $this->extension . 'M');
             // Caution : the end_date to retrieve is the day before the next_begin_date.
             $next_begin_date = $begin_date->add($dext);
             $end_date = clone $next_begin_date;
-            $end_date->sub(new \DateInterval('P1D'));
+            $end_date->sub(new DateInterval('P1D'));
             $this->end_date = $end_date->format('Y-m-d');
         } else {
             throw new \RuntimeException(