diff --git a/includes/controller/shifts_controller.php b/includes/controller/shifts_controller.php
index 9982388e..52162b9e 100644
--- a/includes/controller/shifts_controller.php
+++ b/includes/controller/shifts_controller.php
@@ -15,42 +15,50 @@ function shift_edit_link($shift) {
 function shift_controller() {
   global $user, $privileges;
   
-  if (! in_array('user_shifts', $privileges))
+  if (! in_array('user_shifts', $privileges)) {
     redirect(page_link_to('?'));
+  }
   
-  if (! isset($_REQUEST['shift_id']))
+  if (! isset($_REQUEST['shift_id'])) {
     redirect(page_link_to('user_shifts'));
+  }
   
   $shift = Shift($_REQUEST['shift_id']);
-  if ($shift === false)
+  if ($shift === false) {
     engelsystem_error('Unable to load shift.');
+  }
   if ($shift == null) {
     error(_('Shift could not be found.'));
     redirect(page_link_to('user_shifts'));
   }
   
   $shifttype = ShiftType($shift['shifttype_id']);
-  if ($shifttype === false || $shifttype == null)
+  if ($shifttype === false || $shifttype == null) {
     engelsystem_error('Unable to load shift type.');
+  }
   
   $room = Room($shift['RID']);
-  if ($room === false || $room == null)
+  if ($room === false || $room == null) {
     engelsystem_error('Unable to load room.');
+  }
   
   $angeltypes = AngelTypes();
-  if ($angeltypes === false)
+  if ($angeltypes === false) {
     engelsystem_error('Unable to load angeltypes.');
+  }
   
   $user_shifts = Shifts_by_user($user);
-  if ($user_shifts === false)
+  if ($user_shifts === false) {
     engelsystem_error('Unable to load users shifts.');
+  }
   
   $signed_up = false;
-  foreach ($user_shifts as $user_shift)
+  foreach ($user_shifts as $user_shift) {
     if ($user_shift['SID'] == $shift['SID']) {
       $signed_up = true;
       break;
     }
+  }
   
   return [
       $shift['name'],
@@ -59,8 +67,9 @@ function shift_controller() {
 }
 
 function shifts_controller() {
-  if (! isset($_REQUEST['action']))
+  if (! isset($_REQUEST['action'])) {
     redirect(page_link_to('user_shifts'));
+  }
   
   switch ($_REQUEST['action']) {
     default:
@@ -78,15 +87,18 @@ function shifts_controller() {
 function shift_next_controller() {
   global $user, $privileges;
   
-  if (! in_array('user_shifts', $privileges))
+  if (! in_array('user_shifts', $privileges)) {
     redirect(page_link_to('?'));
+  }
   
   $upcoming_shifts = ShiftEntries_upcoming_for_user($user);
-  if ($upcoming_shifts === false)
+  if ($upcoming_shifts === false) {
     return false;
+  }
   
-  if (count($upcoming_shifts) > 0)
+  if (count($upcoming_shifts) > 0) {
     redirect(shift_link($upcoming_shifts[0]));
+  }
   
   redirect(page_link_to('user_shifts'));
 }
@@ -97,22 +109,25 @@ function shift_next_controller() {
 function shifts_json_export_all_controller() {
   global $api_key;
   
-  if ($api_key == "")
-    die("Config contains empty apikey.");
+  if ($api_key == "") {
+    engelsystem_error("Config contains empty apikey.");
+  }
   
-  if (! isset($_REQUEST['api_key']))
-    die("Missing parameter api_key.");
+  if (! isset($_REQUEST['api_key'])) {
+    engelsystem_error("Missing parameter api_key.");
+  }
   
-  if ($_REQUEST['api_key'] != $api_key)
-    die("Invalid api_key.");
+  if ($_REQUEST['api_key'] != $api_key) {
+    engelsystem_error("Invalid api_key.");
+  }
   
   $shifts_source = Shifts();
-  if ($shifts_source === false)
-    die("Unable to load shifts.");
+  if ($shifts_source === false) {
+    engelsystem_error("Unable to load shifts.");
+  }
   
   header("Content-Type: application/json; charset=utf-8");
-  echo json_encode($shifts_source);
-  die();
+  raw_output(json_encode($shifts_source));
 }
 
 /**
@@ -122,36 +137,44 @@ function shifts_json_export_all_controller() {
 function shifts_json_export_controller() {
   global $ical_shifts, $user;
   
-  if (isset($_REQUEST['key']) && preg_match("/^[0-9a-f]{32}$/", $_REQUEST['key']))
+  if (isset($_REQUEST['key']) && preg_match("/^[0-9a-f]{32}$/", $_REQUEST['key'])) {
     $key = $_REQUEST['key'];
-  else
-    die("Missing key.");
-  
-  $user = User_by_api_key($key);
-  if ($user === false)
-    die("Unable to find user.");
-  if ($user == null)
-    die("Key invalid.");
-  if (! in_array('shifts_json_export', privileges_for_user($user['UID'])))
-    die("No privilege for shifts_json_export.");
-  
-  if (isset($_REQUEST['export']) && $_REQUEST['export'] == 'user_shifts') {
-    require_once realpath(__DIR__ . '/../pages/user_shifts.php');
-    view_user_shifts();
   } else {
-    $ical_shifts = sql_select("
-        SELECT `ShiftTypes`.`name`, `Shifts`.*, `Room`.`Name` as `room_name` 
-        FROM `ShiftEntry` 
-        INNER JOIN `Shifts` ON (`ShiftEntry`.`SID` = `Shifts`.`SID`) 
-        INNER JOIN `ShiftTypes` ON (`Shifts`.`shifttype_id`=`ShiftTypes`.`id`)
-        INNER JOIN `Room` ON (`Shifts`.`RID` = `Room`.`RID`) 
-        WHERE `UID`='" . sql_escape($user['UID']) . "' 
-        ORDER BY `start`");
+    engelsystem_error("Missing key.");
   }
   
+  $user = User_by_api_key($key);
+  if ($user === false) {
+    engelsystem_error("Unable to find user.");
+  }
+  if ($user == null) {
+    engelsystem_error("Key invalid.");
+  }
+  if (! in_array('shifts_json_export', privileges_for_user($user['UID']))) {
+    engelsystem_error("No privilege for shifts_json_export.");
+  }
+  
+  $ical_shifts = load_ical_shifts();
+  
   header("Content-Type: application/json; charset=utf-8");
-  echo json_encode($ical_shifts);
-  die();
+  raw_output(json_encode($ical_shifts));
+}
+
+/**
+ * Returns shifts to export.
+ * Users shifts or user_shifts filter based shifts if export=user_shifts is given as param.
+ */
+function load_ical_shifts() {
+  global $user, $ical_shifts;
+  
+  if (isset($_REQUEST['export']) && $_REQUEST['export'] == 'user_shifts') {
+    require_once realpath(__DIR__ . '/user_shifts.php');
+    view_user_shifts();
+    
+    return $ical_shifts;
+  }
+  
+  return Shifts_by_user($user);
 }
 
 ?>
\ No newline at end of file
diff --git a/includes/pages/user_ical.php b/includes/pages/user_ical.php
index 8db01b62..f82b4122 100644
--- a/includes/pages/user_ical.php
+++ b/includes/pages/user_ical.php
@@ -27,23 +27,6 @@ function user_ical() {
   send_ical_from_shifts($ical_shifts);
 }
 
-/**
- * Returns shifts to export.
- * Users shifts or user_shifts filter based shifts if export=user_shifts is given as param.
- */
-function load_ical_shifts() {
-  global $user, $ical_shifts;
-  
-  if (isset($_REQUEST['export']) && $_REQUEST['export'] == 'user_shifts') {
-    require_once realpath(__DIR__ . '/user_shifts.php');
-    view_user_shifts();
-    
-    return $ical_shifts;
-  }
-  
-  return Shifts_by_user($user);
-}
-
 /**
  * Renders an ical calender from given shifts array.
  *