diff --git a/bukkit/src/main/java/me/lucko/luckperms/bukkit/migration/MigrationGroupManager.java b/bukkit/src/main/java/me/lucko/luckperms/bukkit/migration/MigrationGroupManager.java
index e4ac517a..aba1a2c2 100644
--- a/bukkit/src/main/java/me/lucko/luckperms/bukkit/migration/MigrationGroupManager.java
+++ b/bukkit/src/main/java/me/lucko/luckperms/bukkit/migration/MigrationGroupManager.java
@@ -170,7 +170,7 @@ public class MigrationGroupManager extends SubCommand<Object> {
                 }
 
                 String lastName = user.getLastName();
-                if (Uuids.parse(lastName).isPresent()) {
+                if (lastName != null && Uuids.parse(lastName).isPresent()) {
                     lastName = null;
                 }