diff --git a/commands/vectorWorldToModelVisual.yml b/commands/vectorWorldToModelVisual.yml
index 634dceff4..ff21c1cae 100644
--- a/commands/vectorWorldToModelVisual.yml
+++ b/commands/vectorWorldToModelVisual.yml
@@ -17,7 +17,7 @@ syntax:
     type: Object
   - name: worldDir
     description: vector direction in world space in format [x,y,z]
-    type: ArrayUnknown
+    type: Vector3d
 argument_loc: Unspecified
 effect_loc: Unspecified
 since: