diff --git a/src/main/java/carpet/script/language/Sys.java b/src/main/java/carpet/script/language/Sys.java
index c5fbb401..0a3fff33 100644
--- a/src/main/java/carpet/script/language/Sys.java
+++ b/src/main/java/carpet/script/language/Sys.java
@@ -56,6 +56,10 @@ public class Sys {
                 if (num.isInteger()) return new NumericValue(num.getLong());
                 return new NumericValue(num.getDouble());
             }
+            if (v instanceof ListValue listVal)
+            {
+                return new NumericValue(listVal.length());
+            }
             try
             {
                 return new NumericValue(v.getString());