diff --git a/src/dreammaker/builtins.rs b/src/dreammaker/builtins.rs
index 81a3c1c3..f710122b 100644
--- a/src/dreammaker/builtins.rs
+++ b/src/dreammaker/builtins.rs
@@ -1118,6 +1118,7 @@ pub fn register_builtins(tree: &mut ObjectTree) {
         particles/var/icon;
         particles/var/icon_state;
         particles/var/scale;
+        particles/var/grow;
         particles/var/rotation;
         particles/var/spin;
         particles/var/drift;