diff --git a/smack-core/src/main/java/org/jivesoftware/smack/Roster.java b/smack-core/src/main/java/org/jivesoftware/smack/Roster.java
index 598f99f9c..9985718ea 100644
--- a/smack-core/src/main/java/org/jivesoftware/smack/Roster.java
+++ b/smack-core/src/main/java/org/jivesoftware/smack/Roster.java
@@ -782,15 +782,13 @@ public class Roster {
      *
      * This is used by {@link RosterPushListener} and {@link RosterResultListener}.
      * */
-    private boolean hasValidSubscriptionType(RosterPacket.Item item) {
+    private static boolean hasValidSubscriptionType(RosterPacket.Item item) {
         return item.getItemType().equals(RosterPacket.ItemType.none)
                 || item.getItemType().equals(RosterPacket.ItemType.from)
                 || item.getItemType().equals(RosterPacket.ItemType.to)
                 || item.getItemType().equals(RosterPacket.ItemType.both);
     }
 
-
-
     /**
      * An enumeration for the subscription mode options.
      */