diff --git a/apps/gallery/lib/hooks_handlers.php b/apps/gallery/lib/hooks_handlers.php
index 178d8f3da1..737c38c059 100644
--- a/apps/gallery/lib/hooks_handlers.php
+++ b/apps/gallery/lib/hooks_handlers.php
@@ -52,7 +52,7 @@ class OC_Gallery_Hooks_Handlers {
     if ($new_album_name == '')
       $new_album_name = 'main';
 
-    OC_Log::write(self::$APP_TAG, 'Creating new album '.$new_album_name, OC_Log::DEBUG);
+    OCP\Util::writeLog(self::$APP_TAG, 'Creating new album '.$new_album_name, OC_Log::DEBUG);
     OC_Gallery_Album::create(OC_User::getUser(), $new_album_name, $path);
 
     return OC_Gallery_Album::find(OC_User::getUser(), null, $path);
@@ -110,7 +110,7 @@ class OC_Gallery_Hooks_Handlers {
       if ($olddir == '') $olddir = '/';
       if ($newdir == '') $newdir = '/';
       if (!self::isPhoto($newpath)) return;
-      OC_Log::write(self::$APP_TAG, 'Moving photo from '.$oldpath.' to '.$newpath, OC_Log::DEBUG);
+      OCP\Util::writeLog(self::$APP_TAG, 'Moving photo from '.$oldpath.' to '.$newpath, OC_Log::DEBUG);
       $album;
       $newAlbumId;
       $oldAlbumId;
diff --git a/apps/media/lib_scanner.php b/apps/media/lib_scanner.php
index 78c6ad491d..5d652c1b39 100644
--- a/apps/media/lib_scanner.php
+++ b/apps/media/lib_scanner.php
@@ -72,23 +72,23 @@ class OC_MEDIA_SCANNER{
 		$data=@self::$getID3->analyze($file);
 		getid3_lib::CopyTagsToComments($data);
 		if(!isset($data['comments'])){
-			OC_Log::write('media',"error reading id3 tags in '$file'",OC_Log::WARN);
+			OCP\Util::writeLog('media',"error reading id3 tags in '$file'",OC_Log::WARN);
 			return;
 		}
 		if(!isset($data['comments']['artist'])){
-			OC_Log::write('media',"error reading artist tag in '$file'",OC_Log::WARN);
+			OCP\Util::writeLog('media',"error reading artist tag in '$file'",OC_Log::WARN);
 			$artist='unknown';
 		}else{
 			$artist=stripslashes($data['comments']['artist'][0]);
 		}
 		if(!isset($data['comments']['album'])){
-			OC_Log::write('media',"error reading album tag in '$file'",OC_Log::WARN);
+			OCP\Util::writeLog('media',"error reading album tag in '$file'",OC_Log::WARN);
 			$album='unknown';
 		}else{
 			$album=stripslashes($data['comments']['album'][0]);
 		}
 		if(!isset($data['comments']['title'])){
-			OC_Log::write('media',"error reading title tag in '$file'",OC_Log::WARN);
+			OCP\Util::writeLog('media',"error reading title tag in '$file'",OC_Log::WARN);
 			$title='unknown';
 		}else{
 			$title=stripslashes($data['comments']['title'][0]);
diff --git a/apps/media/server/xml.server.php b/apps/media/server/xml.server.php
index 5297838301..1ef48d551b 100644
--- a/apps/media/server/xml.server.php
+++ b/apps/media/server/xml.server.php
@@ -37,7 +37,7 @@ foreach($arguments as &$argument){
 }
 @ob_clean();
 if(isset($arguments['action'])){
-	OC_Log::write('media','ampache '.$arguments['action'].' request', OC_Log::DEBUG);
+	OCP\Util::writeLog('media','ampache '.$arguments['action'].' request', OC_Log::DEBUG);
 	switch($arguments['action']){
 		case 'songs':
 			OC_MEDIA_AMPACHE::songs($arguments);
diff --git a/apps/user_migrate/admin.php b/apps/user_migrate/admin.php
index 0160753af2..643d58867e 100644
--- a/apps/user_migrate/admin.php
+++ b/apps/user_migrate/admin.php
@@ -37,7 +37,7 @@ if (isset($_POST['user_import'])) {
 	$to = get_temp_dir().'/'.$importname.'.zip';
 	if( !move_uploaded_file( $from, $to ) ){
 		$error = array('error'=>'Failed to move the uploaded file','hint'=>'Try checking the permissions of the '.get_temp_dir().' dir.');
-		OC_Log::write( 'user_migrate', "Failed to copy the uploaded file", OC_Log::ERROR );
+		OCP\Util::writeLog( 'user_migrate', "Failed to copy the uploaded file", OC_Log::ERROR );
 		$tmpl = new OC_Template('user_migrate', 'admin');
 		$tmpl->assign('error',$error);
     	return $tmpl->fetchPage();
@@ -84,4 +84,4 @@ if (isset($_POST['user_import'])) {
 // fill template
     $tmpl = new OC_Template('user_migrate', 'admin');
     return $tmpl->fetchPage();
-}
\ No newline at end of file
+}
diff --git a/apps/user_openid/appinfo/app.php b/apps/user_openid/appinfo/app.php
index cbcbe54422..730039570a 100644
--- a/apps/user_openid/appinfo/app.php
+++ b/apps/user_openid/appinfo/app.php
@@ -26,14 +26,14 @@ OC_User::useBackend('openid');
 
 //check for results from openid requests
 if(isset($_GET['openid_mode']) and $_GET['openid_mode'] == 'id_res'){
-	OC_Log::write('user_openid','openid retured',OC_Log::DEBUG);
+	OCP\Util::writeLog('user_openid','openid retured',OC_Log::DEBUG);
 	$openid = new SimpleOpenID;
 	$openid->SetIdentity($_GET['openid_identity']);
 	$openid_validation_result = $openid->ValidateWithServer();
 	if ($openid_validation_result == true){         // OK HERE KEY IS VALID
-		OC_Log::write('user_openid','auth sucessfull',OC_Log::DEBUG);
+		OCP\Util::writeLog('user_openid','auth sucessfull',OC_Log::DEBUG);
 		$identity=$openid->GetIdentity();
-		OC_Log::write('user_openid','auth as '.$identity,OC_Log::DEBUG);
+		OCP\Util::writeLog('user_openid','auth as '.$identity,OC_Log::DEBUG);
 		$user=OC_USER_OPENID::findUserForIdentity($identity);
 		if($user){
 			$_SESSION['user_id']=$user;
@@ -41,13 +41,13 @@ if(isset($_GET['openid_mode']) and $_GET['openid_mode'] == 'id_res'){
 		}
 	}else if($openid->IsError() == true){            // ON THE WAY, WE GOT SOME ERROR
 		$error = $openid->GetError();
-		OC_Log::write('user_openid','ERROR CODE: '. $error['code'],OC_Log::ERROR);
-		OC_Log::write('user_openid','ERROR DESCRIPTION: '. $error['description'],OC_Log::ERROR);
+		OCP\Util::writeLog('user_openid','ERROR CODE: '. $error['code'],OC_Log::ERROR);
+		OCP\Util::writeLog('user_openid','ERROR DESCRIPTION: '. $error['description'],OC_Log::ERROR);
 	}else{                                            // Signature Verification Failed
-		OC_Log::write('user_openid','INVALID AUTHORIZATION',OC_Log::ERROR);
+		OCP\Util::writeLog('user_openid','INVALID AUTHORIZATION',OC_Log::ERROR);
 	}
 }else if (isset($_GET['openid_mode']) and $_GET['openid_mode'] == 'cancel'){ // User Canceled your Request
-	OC_Log::write('user_openid','USER CANCELED REQUEST',OC_Log::DEBUG);
+	OCP\Util::writeLog('user_openid','USER CANCELED REQUEST',OC_Log::DEBUG);
 	return false;
 }
 
diff --git a/apps/user_openid/user.php b/apps/user_openid/user.php
index 8fec713aa7..edaa825baf 100644
--- a/apps/user_openid/user.php
+++ b/apps/user_openid/user.php
@@ -40,7 +40,7 @@ require_once '../../lib/base.php';
 OC_Util::checkAppEnabled('user_openid');
 
 if(!OC_User::userExists($USERNAME)){
-	OC_Log::write('user_openid',$USERNAME.' doesn\'t exist',OC_Log::WARN);
+	OCP\Util::writeLog('user_openid',$USERNAME.' doesn\'t exist',OC_Log::WARN);
 	$USERNAME='';
 }
 $IDENTITY=OC_Helper::linkToAbsolute( "user_openid", "user.php" ).'/'.$USERNAME;