diff --git a/src/Network/Probe.php b/src/Network/Probe.php
index 0b707856be..56e5c1b9fc 100644
--- a/src/Network/Probe.php
+++ b/src/Network/Probe.php
@@ -88,7 +88,7 @@ class Probe {
 		if (!is_object($xrd))
 			return false;
 
-		$links = xml::element_to_array($xrd);
+		$links = \xml::element_to_array($xrd);
 		if (!isset($links["xrd"]["link"]))
 			return false;
 
@@ -254,7 +254,7 @@ class Probe {
 	public static function uri($uri, $network = "", $uid = 0, $cache = true) {
 
 		if ($cache) {
-			$result = Cache::get("probe_url:".$network.":".$uri);
+			$result = \Cache::get("probe_url:".$network.":".$uri);
 			if (!is_null($result)) {
 				return $result;
 			}
@@ -300,7 +300,7 @@ class Probe {
 
 		// Only store into the cache if the value seems to be valid
 		if (!in_array($data['network'], array(NETWORK_PHANTOM, NETWORK_MAIL))) {
-			Cache::set("probe_url:".$network.":".$uri, $data, CACHE_DAY);
+			\Cache::set("probe_url:".$network.":".$uri, $data, CACHE_DAY);
 
 			/// @todo temporary fix - we need a real contact update function that updates only changing fields
 			/// The biggest problem is the avatar picture that could have a reduced image size.
@@ -499,7 +499,7 @@ class Probe {
 			return $webfinger;
 		}
 
-		$xrd_arr = xml::element_to_array($xrd);
+		$xrd_arr = \xml::element_to_array($xrd);
 		if (!isset($xrd_arr["xrd"]["link"]))
 			return false;
 
@@ -1172,7 +1172,7 @@ class Probe {
 
 		$r = q("SELECT * FROM `mailacct` WHERE `uid` = %d AND `server` != '' LIMIT 1", intval($uid));
 
-		if (dbm::is_result($x) && dbm::is_result($r)) {
+		if (\dbm::is_result($x) && \dbm::is_result($r)) {
 			$mailbox = construct_mailbox_name($r[0]);
 			$password = '';
 			openssl_private_decrypt(hex2bin($r[0]['pass']), $password,$x[0]['prvkey']);