diff --git a/src/main/java/dan200/computercraft/shared/Config.java b/src/main/java/dan200/computercraft/shared/Config.java
index e1051a55e..76bbe6f43 100644
--- a/src/main/java/dan200/computercraft/shared/Config.java
+++ b/src/main/java/dan200/computercraft/shared/Config.java
@@ -402,7 +402,7 @@ public final class Config
 
             if( oldProperty.isList() )
             {
-                oldProperty.setValues( oldProperty.getStringList() );
+                oldProperty.setValues( newProperty.getStringList() );
             }
             else
             {