diff --git a/src/main/java/de/jaschastarke/minecraft/limitedcreative/limits/BlackList.java b/src/main/java/de/jaschastarke/minecraft/limitedcreative/limits/BlackList.java
index 6bd5aef..d85067a 100644
--- a/src/main/java/de/jaschastarke/minecraft/limitedcreative/limits/BlackList.java
+++ b/src/main/java/de/jaschastarke/minecraft/limitedcreative/limits/BlackList.java
@@ -74,7 +74,8 @@ public class BlackList extends ArrayList<BlackList.Blacklisted> implements Confi
                     add((Blacklisted) el);
                 } else {
                     try {
-                        add(el.toString());
+                        if (el != null)
+                            add(el.toString());
                     } catch (InvalidValueException e) {
                         System.err.println(e.getCause().getMessage());
                     }
diff --git a/src/main/java/de/jaschastarke/minecraft/limitedcreative/limits/BlackListEntity.java b/src/main/java/de/jaschastarke/minecraft/limitedcreative/limits/BlackListEntity.java
index 40e33e8..3d3b68f 100644
--- a/src/main/java/de/jaschastarke/minecraft/limitedcreative/limits/BlackListEntity.java
+++ b/src/main/java/de/jaschastarke/minecraft/limitedcreative/limits/BlackListEntity.java
@@ -66,7 +66,8 @@ public class BlackListEntity extends ArrayList<BlackListEntity.Blacklisted> impl
                     add((Blacklisted) el);
                 } else {
                     try {
-                        add(el.toString());
+                        if (el != null)
+                            add(el.toString());
                     } catch (InvalidValueException e) {
                         System.err.println((e.getCause() != null ? e.getCause() : e).getMessage());
                     }