diff --git a/src/main/java/carpet/script/value/NBTSerializableValue.java b/src/main/java/carpet/script/value/NBTSerializableValue.java
index b240173e..049201db 100644
--- a/src/main/java/carpet/script/value/NBTSerializableValue.java
+++ b/src/main/java/carpet/script/value/NBTSerializableValue.java
@@ -420,11 +420,11 @@ public class NBTSerializableValue extends Value implements ContainerValueInterfa
         if (tag instanceof NbtCompound)
             return !((NbtCompound) tag).isEmpty();
         if (tag instanceof AbstractNbtList)
-            return ((AbstractNbtList) tag).isEmpty();
+            return !((AbstractNbtList) tag).isEmpty();
         if (tag instanceof AbstractNbtNumber)
             return ((AbstractNbtNumber) tag).doubleValue()!=0.0;
         if (tag instanceof NbtString)
-            return tag.asString().isEmpty();
+            return !tag.asString().isEmpty();
         return true;
     }