diff --git a/XMPPHP/XMLStream.php b/XMPPHP/XMLStream.php
index a39e12e..63c0624 100644
--- a/XMPPHP/XMLStream.php
+++ b/XMPPHP/XMLStream.php
@@ -465,8 +465,7 @@ class XMPPHP_XMLStream {
 					}
 					$part = fread($this->socket, 4096);
 					stream_set_blocking($this->socket, 1);
-
-					if (!$part) {
+					if ($part === false) {
 						if($this->reconnect) {
 							$this->doReconnect();
 						} else {
diff --git a/XMPPHP/XMPP.php b/XMPPHP/XMPP.php
index f58fc37..a724a5c 100644
--- a/XMPPHP/XMPP.php
+++ b/XMPPHP/XMPP.php
@@ -214,7 +214,7 @@ class XMPPHP_XMPP extends XMPPHP_XMLStream {
 		$out = "<presence";
 		if($to) $out .= " to=\"$to\"";
 		if($type) $out .= " type='$type'";
-		if($show == 'available' and !$status) {
+		if($show == 'available' and !$status and $priority !== null) {
 			$out .= "/>";
 		} else {
 			$out .= ">";