diff --git a/extra/processing/gallery/trails/trails.factor b/extra/processing/gallery/trails/trails.factor
index 5abe23bb90..a5b2b7b02a 100644
--- a/extra/processing/gallery/trails/trails.factor
+++ b/extra/processing/gallery/trails/trails.factor
@@ -1,6 +1,6 @@
 
 USING: kernel arrays sequences math math.order qualified
-       sequences.lib circular processing ui newfx ;
+       sequences.lib circular processing ui newfx processing.shapes ;
 
 IN: processing.gallery.trails