diff --git a/tools/clog-builder-control-properties.lisp b/tools/clog-builder-control-properties.lisp
index d3897bd..ce01b17 100644
--- a/tools/clog-builder-control-properties.lisp
+++ b/tools/clog-builder-control-properties.lisp
@@ -30,6 +30,7 @@
   "Populate the control properties for the current control"
   ;; obj if current-control is nil must be content
   (when obj
+    (browser-gc obj)
     (let ((app (connection-data-item obj "builder-app-data")))
       (if clear
           (setf (inner-html (properties-list app)) "")