diff --git a/includes/controller/shift_entries_controller.php b/includes/controller/shift_entries_controller.php
index 2c57f550..356a9db8 100644
--- a/includes/controller/shift_entries_controller.php
+++ b/includes/controller/shift_entries_controller.php
@@ -17,7 +17,7 @@ function shift_entries_controller()
 
     $action = strip_request_item('action');
     if (empty($action)) {
-        redirect(user_link($user));
+        redirect(user_link($user['UID']));
     }
 
     switch ($action) {
@@ -44,7 +44,7 @@ function shift_entry_create_controller()
 
     $shift = Shift($request->input('shift_id'));
     if (empty($shift)) {
-        redirect(user_link($user));
+        redirect(user_link($user['UID']));
     }
 
     $angeltype = AngelType($request->input('angeltype_id'));
@@ -54,7 +54,7 @@ function shift_entry_create_controller()
     }
 
     if (empty($angeltype)) {
-        redirect(user_link($user));
+        redirect(user_link($user['UID']));
     }
 
     if (User_is_AngelType_supporter($user, $angeltype)) {
@@ -345,7 +345,7 @@ function shift_entry_delete_controller()
     $signout_user = User($shiftEntry['UID']);
     if (!Shift_signout_allowed($shift, $angeltype, $signout_user)) {
         error(__('You are not allowed to remove this shift entry. If necessary, ask your supporter or heaven to do so.'));
-        redirect(user_link($signout_user));
+        redirect(user_link($signout_user['UID']));
     }
 
     if ($request->has('continue')) {
diff --git a/includes/controller/user_driver_licenses_controller.php b/includes/controller/user_driver_licenses_controller.php
index 422ad382..2a3f7023 100644
--- a/includes/controller/user_driver_licenses_controller.php
+++ b/includes/controller/user_driver_licenses_controller.php
@@ -130,7 +130,7 @@ function user_driver_license_edit_controller()
                 }
                 engelsystem_log('Driver license information updated.');
                 success(__('Your driver license information has been saved.'));
-                redirect(user_link($user_source));
+                redirect(user_link($user_source['UID']));
             } else {
                 error(__('Please select at least one driving license.'));
             }
@@ -138,7 +138,7 @@ function user_driver_license_edit_controller()
             UserDriverLicenses_delete($user_source['UID']);
             engelsystem_log('Driver license information removed.');
             success(__('Your driver license information has been removed.'));
-            redirect(user_link($user_source));
+            redirect(user_link($user_source['UID']));
         }
     }
 
diff --git a/includes/controller/user_worklog_controller.php b/includes/controller/user_worklog_controller.php
index 640dcaba..a431643f 100644
--- a/includes/controller/user_worklog_controller.php
+++ b/includes/controller/user_worklog_controller.php
@@ -12,7 +12,7 @@ function user_worklog_delete_controller()
     $request = request();
     $userWorkLog = UserWorkLog($request->input('user_worklog_id'));
     if (empty($userWorkLog)) {
-        redirect(user_link($user));
+        redirect(user_link($user['UID']));
     }
     $user_source = User($userWorkLog['user_id']);
 
@@ -20,7 +20,7 @@ function user_worklog_delete_controller()
         UserWorkLog_delete($userWorkLog);
 
         success(__('Work log entry deleted.'));
-        redirect(user_link($user_source));
+        redirect(user_link($user_source['UID']));
     }
 
     return [
@@ -41,7 +41,7 @@ function user_worklog_edit_controller()
     $request = request();
     $userWorkLog = UserWorkLog($request->input('user_worklog_id'));
     if (empty($userWorkLog)) {
-        redirect(user_link($user));
+        redirect(user_link($user['UID']));
     }
     $user_source = User($userWorkLog['user_id']);
 
@@ -52,7 +52,7 @@ function user_worklog_edit_controller()
             UserWorkLog_update($userWorkLog);
 
             success(__('Work log entry updated.'));
-            redirect(user_link($user_source));
+            redirect(user_link($user_source['UID']));
         }
     }
 
@@ -113,7 +113,7 @@ function user_worklog_add_controller()
     $request = request();
     $user_source = User($request->input('user_id'));
     if (empty($user_source)) {
-        redirect(user_link($user));
+        redirect(user_link($user['UID']));
     }
 
     $userWorkLog = UserWorkLog_new($user_source);
@@ -125,7 +125,7 @@ function user_worklog_add_controller()
             UserWorkLog_create($userWorkLog);
 
             success(__('Work log entry created.'));
-            redirect(user_link($user_source));
+            redirect(user_link($user_source['UID']));
         }
     }
 
@@ -189,13 +189,13 @@ function user_worklog_controller()
     global $user, $privileges;
 
     if (!in_array('admin_user_worklog', $privileges)) {
-        redirect(user_link($user));
+        redirect(user_link($user['UID']));
     }
 
     $request = request();
     $action = $request->input('action');
     if (!$request->has('action')) {
-        redirect(user_link($user));
+        redirect(user_link($user['UID']));
     }
 
     switch ($action) {
diff --git a/includes/controller/users_controller.php b/includes/controller/users_controller.php
index 13264fd1..f49439da 100644
--- a/includes/controller/users_controller.php
+++ b/includes/controller/users_controller.php
@@ -59,7 +59,7 @@ function user_delete_controller()
     // You cannot delete yourself
     if ($user['UID'] == $user_source['UID']) {
         error(__('You cannot delete yourself.'));
-        redirect(user_link($user));
+        redirect(user_link($user['UID']));
     }
 
     if ($request->has('submit')) {
@@ -101,30 +101,30 @@ function users_link()
 }
 
 /**
- * @param array $user
+ * @param int $userId
  * @return string
  */
-function user_edit_link($user)
+function user_edit_link($userId)
 {
-    return page_link_to('admin_user', ['user_id' => $user['UID']]);
+    return page_link_to('admin_user', ['user_id' => $userId]);
 }
 
 /**
- * @param array $user
+ * @param int $userId
  * @return string
  */
-function user_delete_link($user)
+function user_delete_link($userId)
 {
-    return page_link_to('users', ['action' => 'delete', 'user_id' => $user['UID']]);
+    return page_link_to('users', ['action' => 'delete', 'user_id' => $userId]);
 }
 
 /**
- * @param array $user
+ * @param int $userId
  * @return string
  */
-function user_link($user)
+function user_link($userId)
 {
-    return page_link_to('users', ['action' => 'view', 'user_id' => $user['UID']]);
+    return page_link_to('users', ['action' => 'view', 'user_id' => $userId]);
 }
 
 /**
@@ -169,7 +169,7 @@ function user_edit_vouchers_controller()
             engelsystem_log(User_Nick_render($user_source) . ': ' . sprintf('Got %s vouchers',
                     $user_source['got_voucher']));
 
-            redirect(user_link($user_source));
+            redirect(user_link($user_source['UID']));
         }
     }
 
diff --git a/includes/pages/admin_arrive.php b/includes/pages/admin_arrive.php
index cb03437f..4f29b85d 100644
--- a/includes/pages/admin_arrive.php
+++ b/includes/pages/admin_arrive.php
@@ -36,7 +36,7 @@ function admin_arrive()
             ', [$user_id]);
             engelsystem_log('User set to not arrived: ' . User_Nick_render($user_source));
             success(__('Reset done. Angel has not arrived.'));
-            redirect(user_link($user_source));
+            redirect(user_link($user_source['UID']));
         } else {
             $msg = error(__('Angel not found.'), true);
         }
@@ -52,7 +52,7 @@ function admin_arrive()
             ', [time(), $user_id]);
             engelsystem_log('User set has arrived: ' . User_Nick_render($user_source));
             success(__('Angel has been marked as arrived.'));
-            redirect(user_link($user_source));
+            redirect(user_link($user_source['UID']));
         } else {
             $msg = error(__('Angel not found.'), true);
         }
diff --git a/includes/pages/admin_user.php b/includes/pages/admin_user.php
index 2ef48eb7..b4dd9c1b 100644
--- a/includes/pages/admin_user.php
+++ b/includes/pages/admin_user.php
@@ -165,7 +165,7 @@ function admin_user()
         }
 
         $html .= buttons([
-            button(user_delete_link($user_source), glyph('lock') . __('delete'), 'btn-danger')
+            button(user_delete_link($user_source['UID']), glyph('lock') . __('delete'), 'btn-danger')
         ]);
 
         $html .= "<hr />";
diff --git a/includes/view/ShiftEntry_view.php b/includes/view/ShiftEntry_view.php
index 7884e404..1d6ba3a3 100644
--- a/includes/view/ShiftEntry_view.php
+++ b/includes/view/ShiftEntry_view.php
@@ -22,7 +22,7 @@ function ShiftEntry_delete_view_admin($shiftEntry, $shift, $angeltype, $signoff_
             $angeltype['name']
         ), true),
         buttons([
-            button(user_link($signoff_user), glyph('remove') . __('cancel')),
+            button(user_link($signoff_user['UID']), glyph('remove') . __('cancel')),
             button(shift_entry_delete_link($shiftEntry, [
                 'continue' => 1
             ]), glyph('ok') . __('delete'), 'btn-danger')
@@ -51,7 +51,7 @@ function ShiftEntry_delete_view($shiftEntry, $shift, $angeltype, $signoff_user)
             $angeltype['name']
         ), true),
         buttons([
-            button(user_link($signoff_user), glyph('remove') . __('cancel')),
+            button(user_link($signoff_user['UID']), glyph('remove') . __('cancel')),
             button(shift_entry_delete_link($shiftEntry, [
                 'continue' => 1
             ]), glyph('ok') . __('delete'), 'btn-danger')
diff --git a/includes/view/Shifts_view.php b/includes/view/Shifts_view.php
index 0aa89f2e..92447efd 100644
--- a/includes/view/Shifts_view.php
+++ b/includes/view/Shifts_view.php
@@ -141,7 +141,7 @@ function Shift_view($shift, $shifttype, $room, $angeltypes_source, ShiftSignupSt
             $admin_rooms ? button(room_link($room), glyph('map-marker') . $room['Name']) : '',
         ];
     }
-    $buttons[] = button(user_link($user), '<span class="icon-icon_angel"></span> ' . __('My shifts'));
+    $buttons[] = button(user_link($user['UID']), '<span class="icon-icon_angel"></span> ' . __('My shifts'));
     $content[] = buttons($buttons);
 
     $content[] = Shift_view_header($shift, $room);
diff --git a/includes/view/UserDriverLicenses_view.php b/includes/view/UserDriverLicenses_view.php
index 317910b6..664a5d58 100644
--- a/includes/view/UserDriverLicenses_view.php
+++ b/includes/view/UserDriverLicenses_view.php
@@ -12,7 +12,7 @@ function UserDriverLicense_edit_view($user_source, $wants_to_drive, $user_driver
 {
     return page_with_title(sprintf(__('Edit %s driving license information'), User_Nick_render($user_source)), [
         buttons([
-            button(user_link($user_source), __('Back to profile'), 'back')
+            button(user_link($user_source['UID']), __('Back to profile'), 'back')
         ]),
         msg(),
         form([
diff --git a/includes/view/UserWorkLog_view.php b/includes/view/UserWorkLog_view.php
index e64f5412..1c2ffb40 100644
--- a/includes/view/UserWorkLog_view.php
+++ b/includes/view/UserWorkLog_view.php
@@ -15,7 +15,7 @@ function UserWorkLog_delete_view($user_source, $userWorkLog)
             User_Nick_render($user_source)
         ), true),
         buttons([
-            button(user_link($user_source), glyph('remove') . __('cancel')),
+            button(user_link($user_source['UID']), glyph('remove') . __('cancel')),
             button(user_worklog_delete_link($userWorkLog, [
                 'confirmed' => 1
             ]), glyph('ok') . __('delete'), 'btn-danger')
@@ -60,7 +60,7 @@ function UserWorkLog_edit_view($user_source, $userWorkLog)
 {
     return page_with_title(UserWorkLog_edit_title(), [
         buttons([
-            button(user_link($user_source), __('back'))
+            button(user_link($user_source['UID']), __('back'))
         ]),
         msg(),
         UserWorkLog_edit_form($user_source, $userWorkLog)
@@ -78,7 +78,7 @@ function UserWorkLog_add_view($user_source, $userWorkLog)
 {
     return page_with_title(UserWorkLog_add_title(), [
         buttons([
-            button(user_link($user_source), __('back'))
+            button(user_link($user_source['UID']), __('back'))
         ]),
         msg(),
         UserWorkLog_edit_form($user_source, $userWorkLog)
diff --git a/includes/view/User_view.php b/includes/view/User_view.php
index 1b3c0daf..ccd5e5d2 100644
--- a/includes/view/User_view.php
+++ b/includes/view/User_view.php
@@ -153,7 +153,7 @@ function User_delete_view($user)
     return page_with_title(sprintf(__('Delete %s'), User_Nick_render($user)), [
         msg(),
         buttons([
-            button(user_edit_link($user), glyph('chevron-left') . __('back'))
+            button(user_edit_link($user['UID']), glyph('chevron-left') . __('back'))
         ]),
         error(
             __('Do you really want to delete the user including all his shifts and every other piece of his data?'),
@@ -177,7 +177,7 @@ function User_edit_vouchers_view($user)
     return page_with_title(sprintf(__('%s\'s vouchers'), User_Nick_render($user)), [
         msg(),
         buttons([
-            button(user_link($user), glyph('chevron-left') . __('back'))
+            button(user_link($user['UID']), glyph('chevron-left') . __('back'))
         ]),
         info(sprintf(
             __('Angel should receive at least  %d vouchers.'),