diff --git a/apps/contacts/css/jquery.Jcrop.css b/apps/contacts/css/jquery.Jcrop.css
index c9b24a5ebe..a9ba4746e0 100644
--- a/apps/contacts/css/jquery.Jcrop.css
+++ b/apps/contacts/css/jquery.Jcrop.css
@@ -14,7 +14,7 @@
 }
 
 .jcrop-vline, .jcrop-hline {
-	background: white url('%webroot%/apps/contacts/img/Jcrop.gif') top left repeat;
+	background: white url('%appswebroot%/contacts/img/Jcrop.gif') top left repeat;
 	font-size: 0px;
 	position: absolute;
 }
diff --git a/lib/db.php b/lib/db.php
index bcc8657b4a..dc9e3392d0 100644
--- a/lib/db.php
+++ b/lib/db.php
@@ -526,7 +526,7 @@ class OC_DB {
 	 	self::removeDBStructure( OC::$SERVERROOT . '/db_structure.xml' );
 	 	
 	 	foreach($apps as $app){
-	 		$path = OC::$SERVERROOT.'/apps/'.$app.'/appinfo/database.xml';
+	 		$path = self::getAppPath($app).'/appinfo/database.xml';
 	 		if(file_exists($path)){
 	 			self::removeDBStructure( $path );	
 	 		}
diff --git a/lib/migrate.php b/lib/migrate.php
index 5939ba32e5..f26b4b2567 100644
--- a/lib/migrate.php
+++ b/lib/migrate.php
@@ -64,7 +64,7 @@ class OC_Migrate{
 		$apps = OC_App::getAllApps();
 
 		foreach($apps as $app){
-			$path = OC::$SERVERROOT . '/apps/' . $app . '/appinfo/migrate.php';
+			$path = self::getAppPath($app) . '/appinfo/migrate.php';
 			if( file_exists( $path ) ){
 				include( $path );
 			}
@@ -398,7 +398,7 @@ class OC_Migrate{
 			if( OC_App::isEnabled( $provider->getID() ) ){
 				$success = true;
 				// Does this app use the database?
-				if( file_exists( OC::$SERVERROOT.'/apps/'.$provider->getID().'/appinfo/database.xml' ) ){
+				if( file_exists( self::getAppPath($provider->getID()).'/appinfo/database.xml' ) ){
 					// Create some app tables
 					$tables = self::createAppTables( $provider->getID() );
 					if( is_array( $tables ) ){
@@ -539,7 +539,7 @@ class OC_Migrate{
 		}
 
 		// There is a database.xml file
-		$content = file_get_contents( OC::$SERVERROOT . '/apps/' . $appid . '/appinfo/database.xml' );
+		$content = file_get_contents(self::getAppPath($appid) . '/appinfo/database.xml' );
 
 		$file2 = 'static://db_scheme';
 		// TODO get the relative path to migration.db from the data dir
@@ -608,7 +608,7 @@ class OC_Migrate{
 	static public function getApps(){
 		$allapps = OC_App::getAllApps();
 		foreach($allapps as $app){
-			$path = OC::$SERVERROOT . '/apps/' . $app . '/lib/migrate.php';
+			$path = self::getAppPath($app) . '/lib/migrate.php';
 			if( file_exists( $path ) ){
 				$supportsmigration[] = $app;
 			}