diff --git a/src/engine/devcmd/cmds/SlotNpcCmd.java b/src/engine/devcmd/cmds/SlotNpcCmd.java
index 576e0165..0efbedff 100644
--- a/src/engine/devcmd/cmds/SlotNpcCmd.java
+++ b/src/engine/devcmd/cmds/SlotNpcCmd.java
@@ -90,7 +90,7 @@ public class SlotNpcCmd extends AbstractDevCmd {
 
         // User requests list of current groups.
 
-        if (args[0].equalsIgnoreCase("LIST")) {
+        if (args.length == 0 || args[0].equalsIgnoreCase("LIST")) {
 
             outString = "Current: " + contract.allowedBuildings;